Kumar-Sarangi, Manoj, Bhuwan Chandra-Joshi, and Bob Ritchie. “Natural Bioenhancers in Drug Delivery: An Overview”. Puerto Rico Health Sciences Journal 37, no. 1 (March 14, 2018): 12–18. Accessed November 24, 2025. https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/1605.