Rachmaniah, Orchidea, Jaap van Spronsen, Robert Verpoorte, and Geert Jan Witkamp. “The Effect of Acids on Alkaloid Yield in Pressurized Water Extraction of Narcissus Pseudonarcissus”. Journal of Engineering and Technological Sciences 53, no. 6 (December 29, 2021): 210608. Accessed February 9, 2025. https://journals.itb.ac.id/index.php/jets/article/view/16903.