Melia, Sri, et al. “Antioxidant and Antimicrobial Activities of Gambir (Uncaria Gambir Roxb) Extracts and Their Application in Rendang”. Pakistan Journal of Nutrition, vol. 14, no. 12, Nov. 2015, pp. 938–941, https://doi.org/10.3923/pjn.2015.938.941.