Agustin, A. E., V. Mierza, B. N. Annisa, C. N. Sa’adah, F. Prasetyo, and C. F. Lubis. “Standardization of Anthocyanin Compounds in Plants in Indonesia: Literature Review”. Jurnal EduHealth, vol. 13, no. 02, Dec. 2022, pp. 942-9, https://ejournal.seaninstitute.or.id/index.php/healt/article/view/851.