I Made Jawi. “The Pharmacological Mechanisms of Anthocyanin in Aqueous Extract of Purple Sweet Potato As Antihyperglycemic Herbal Remedy”. Global Journal of Medical Research, vol. 16, no. B2, May 2016, pp. 27-32, https://medicalresearchjournal.org/index.php/GJMR/article/view/1103.