Kusumorini, Nindya, Akhmad Kharis Nugroho, Suwijiyo Pramono, and Ronny Martien. “Development of New Isolation and Quantification Method of Piperine from White Pepper Seeds (Piper Nigrum L) Using A Validated HPLC”. Indonesian Journal of Pharmacy 32, no. 2 (June 25, 2021): 158-165. Accessed November 24, 2024. https://journal.ugm.ac.id/v3/IJP/article/view/866.