Thieu, P.X., Phu, H.V. and Dung, N.A. 2013. Chemical components of the essential oils from leaf of Citrus sinensis (L.) Osbeck in Nghe An province. Academia Journal of Biology. 35, 1 (Mar. 2013), 61–66. DOI:https://doi.org/10.15625/0866-7160/v35n1.2939.