Adams, R. P. (2007). Identification of essential oil components by gas chromatography-mass spectrometry. 4th ed. Carol Stream (IL): Allured Publishing Corporation.

Bruce, T. J. A., Birkett, M. A., Blande, J., Hooper, A. M., Martin, J. L., Khambay, B., Prosser, I., Smart, L. E., Wadhams, L.J. (2005). Response of economically important aphids to components of Hemizygia petiolata essential oil. Pest Management Science, 61, 1115-1121.

Burkill, I. H. (1966). A dictionary of the economic product of Malay Peninsula. Kuala Lumpur: Ministry of Agriculture and Co-operatives.

Da Silva, A. C., Lopes, P. M., de Azevedo, M. M., Costa, D. C., Alviano, C. S., Alviano, D. S. (2012). Biological activities of α-pinene and β-pinene enantiomers. Molecules, 17, 6305-6316.

Fujita, S. (1990). Miscellaneous contributions to the essential oils of plants from various territories. LI. On the components of essential oils of Torilis japonica (Houtt.) DC. Yakugaku Zasshi, 110, 771-775.

Hisham, A., Rameshkumar, K. B., Sherwani, N., Al-Saidi, S., Al-Kindy, S. (2012). The composition and antimicrobial activities of Cyperus conglomeratus, Desmos chinensis var. lawii and Cyathocalyx zeylanicus essential oils. Natural Product Communications, 7(5), 663-666.

Hoferl, M., Dai, D. N., Thang, T. D., Jirovetz, L., Schmidt, E. (2013). Leaf essential oils of six Vietnamese species of Fissistigma (Annonaceae). Natural Product Communications, 8(5), 663-665.

Huang, X., Xiao, Y., Köllner, T. G., Zhang, W., Wu, J., Wu, J., Guo, Y., Zhang, Y. (2013). Identification and characterization of (E)-β-caryophyllene synthase and α/β-pinene synthase potentially involved in constitutive and herbivore-induced terpene formation in cotton. Plant Physiology and Biochemistry, 73, 302-308.

IPNI (2020). International Plant Names Index. Published on the Internet http://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Botanic Gardens.

Mercier, B., Prost, J., Prost, M. (2009). The essential oil of turpentine and its major volatile fraction (alpha- and betapinenes): A review. International Journal of Occupational Medicine Environment and Health, 22, 331-342.

Moura, A. P. G., Beltrao, D. M., Pita, J. C. L. R., Xavier, A. L., Brito, M. T., Sousa, T. K. G. D., Batista, L. M., Carvalho, J. E. D., Ruiz, A. L. T. G., Della Torre, A., Duarte, M. C., Tavares, J. F., da Silva, M. S., Sobral, M. V. (2016). Essential oil from fruit of Xylopia langsdorffiana: antitumour activity and toxicity. Pharmaceutical Biology, 54(12), 3093-3102.

Palazzo, M. C., Wright, H. L., Agius, B. R., Wright, B. S., Moriarity, D. M., Haber, W. A., Setzer, W. N. (2009). Chemical compositions and biological activities of leaf essential oils of six species of Annonaceae from Monteverde, Costa Rica. Records of Natural Products, 3, 153-160.

Picollo, M. I., Toloza, A. C., Mougabure, C. G., Zygadlo, J., Zerba, E. (2008). Anticholinesterase and pediculicidal activities of monoterpenoids. Fitoterapia, 79(4), 271-278.

Salleh, W. M. N. H. W., Ahmad, F., Khong, H. Y. (2014). Chemical composition of Piper stylosum Miq. and Piper ribesioides Wall. essential oils and their antioxidant, antimicrobial and tyrosinase inhibition activities. Latin American and Caribbean Bulletin of Medicinal and Aromatic Plants, 13(5), 488-497.

Salleh, W. M. N. H. W., Hashim, N. A., Ahmad, F., Khong, H. Y. (2014b). Anticholinesterase and antityrosinase activities of ten Piper species from Malaysia. Advanced Pharmaceutical Bulletin, 4(2), 527-531.

Salleh, W. M. N. H. W., Ahmad, F., Khong, H. Y., Zulkifli, R. M. (2015a). Chemical compositions and biological activities of essential oils of Beilschmiedia glabra. Natural Product Communications, 10(7), 1297-1300.

Salleh, W. M. N. H. W., Ahmad, F., Khong, H. Y. (2015b). Antioxidant and anticholinesterase activities of essential oils of Cinnamomum griffithii and C. macrocarpum. Natural Product Communications, 10(8), 1465-1468.

Salleh, W. M. N. H. W., Ahmad, F., Khong, H. Y., Zulkifli, R. M. (2016a). Essential oil composition of Malaysian Lauraceae: A mini review. Pharmaceutical Sciences, 22, 60-67.

Salleh, W. M. N. H. W., Ahmad, F., Khong, H. Y., Zulkifli, R. M. (2016b). Comparative study of the essential oils of three Beilschmiedia species and their biological activities. International Journal of Food Science & Technology, 51, 240-249.

Sherin, A. R., Asla Kukku, K., Leela, N. K. (2018). Monoterpenes rich essential oils from the leaves of Polyalthia korintii (Dunal) Benth. and Hook.F. (Annonaceae) from Kerala. Asian Journal of Pharmaceutical and Health Sciences, 8(4), 2019-2023.

Stranden, M., Borg-Karlson, A. K., Mustaparta, H. (2002). Receptor neuron discrimination of the germacrene D enantiomers in the moth Helicoverpa armigera. Chemical Senses, 27, 143-152.

Thang, T. D., Luu, H. V., Tuan, N. N., Hung, N. H., Dai, D. N., Ogunwande, I. A. (2014). Constituents of essential oils from the leaves and stem barks of Uvaria rufa and Uvaria cordata (Annonaceae) from Vietnam. Journal of Essential Oil Bearing Plants, 17(3), 427-434.

Violante, I. M., Garcez, W. S., Barbosa Cda, S., Garcez, F. R. (2012). Chemical composition and biological activities of essential oil from Hyptis crenata growing in the Brazilian cerrado. Natural Product Communications, 7, 1387-1389.

Wang, R. J., Saunders, R. M. K. (2006). A synopsis of Cyathocalyx species (Annonaceae) in Peninsular Malaysia, Sumatra, and Borneo, with descriptions of two new species. Botanical Journal of the Linnean Society, 152, 513-532.

Wijeratne, E. M. K., De Silva, L. B., Kikuchi, T., Tezuka, Y., Gunatilaka, A. A. L., Kingston, D. G. I. (1995a). Cyathocaline, an azafluorenone alkaloid from Cyathocalyx zeylanica. Journal of Natural Products, 58(3), 459-462.

Wijeratne, E. M. K., De Silva, L. B., Tezuka, Y., Kikuchi, T. (1995b). Clerodane diterpenoids from Cyathocalyx zeylanica. Phytochemistry, 39(2), 443-445.

Xavier, M. N., Alves, C. C. F., Cazal, C. M., Santos, N. H. (2016). Chemical composition of the volatile oil of Cardiopetalum calophyllum collected in the cerrado area. Ciencia Rural, 46(5), 937-942.