Zanaria, Mahrus, Lalu Zulkifli, and Dewa Ayu Citra Rasmi. “Effect of Adding Pectin on The Quality of Red Dragon Fruit (Hylocereus Polyrhizus) Sheet Jam”. Jurnal Biologi Tropis 24, no. 1 (January 15, 2024): 92–99. Accessed November 22, 2024. http://jurnalfkip.unram.ac.id/index.php/JBT/article/view/6376.