Wulandari, Ratna, Moch. Agus Krisno Budiyanto, and Lud Waluyo. “THE INFLUENCE OF VARIOUS CONCENTRATION OF RED ROSES (ROSA DAMASCENA MILL) FLOWER EXTRACT TO ANTHOCYANIN COLOR STABILITY JELLY AS BIOLOGY LEARNING SOURCE”. JPBI (Jurnal Pendidikan Biologi Indonesia) 2, no. 1 (July 22, 2016): 48–56. Accessed June 7, 2026. https://ejournal.umm.ac.id/index.php/jpbi/article/view/3371.