Putri, Yollanda Prissila, and Dina Fadhila. “Substance Dipeptidyl Peptidase IV in Purple Sweet Potatoes to Maintain Blood Sugar Levels”. Journal of Catalyst and Bioinformatics (Catalytic), vol. 1, no. 01, Jan. 2022, pp. 35-42, https://catalytic.ppj.unp.ac.id/index.php/jurnal/article/view/94.