Cang, M.H., Nhi, P.T.B. and Linh, N.T.C. (2020) “Betel (Piper betle L.) leaf essential oil extraction using steam distillation”, International Journal of Advanced Engineering Research and Science, 7(6). Available at: https://journal-repository.com/index.php/ijaers/article/view/2093 (Accessed: 22 July 2024).