I. Hasmita, A. Adisalamun, P. Nurul Alam, S. Satriana, M. Mahlinda, and M. D. Supardan, “Effect of Drying and Hydrodistillation Time on the Amount of Ginger Essential Oil”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 5, no. 5, pp. 300–303, Oct. 2015.