Irawati, D., Styawan, A. A., & Nurhaini, R. (2018). Penetapan Kadar Kafein pada Teh Oolong (Camellia Sinensis) dengan Metode Titrasi Bebas Air. Prosiding University Research Colloquium, 464–469. Retrieved from https://repository.urecol.org/index.php/proceeding/article/view/223