Fitri, Novita Cahyani, and Yussi Pratiwi. “Analisis Kadar Kafein Dalam Sampel Kopi Instan Dan Minuman Berenergi Menggunakan High Performance Liquid Chromatography (HPLC)”. JRSKT - Jurnal Riset Sains dan Kimia Terapan 9, no. 2 (December 25, 2023): 73 - 80. Accessed June 9, 2025. http://103.8.12.212:33180/unj/index.php/jrskt/article/view/44525.