Abriyani, Ermi, Nanda Selvia Putri, Risma Siti Nur Rosidah, and Salwa Sukma Ismanita. “Analisis Kafein Menggunakan Metode Uv-Vis: Tinjauan Literatur”. Jurnal Pendidikan dan Konseling (JPDK) 4, no. 6 (December 24, 2022): 12732–12739. Accessed October 3, 2024. http://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/10610.