RAVINDRAN MUTHUKUMARASAMY, and NUR AIN NAJIHAH MOHD IDERIS. “Formulation and Evaluation of Antioxidant Cream Containing Methanolic Extract of Piper Betel Leaves”. International Journal of Pharma and Bio Sciences 7, no. 4 (December 31, 2016): 323–328. Accessed July 24, 2026. https://ijpbs.net/index.php/journal/article/view/5429.