Rani Z, Julia Reveny, Urip Harahap. Utilization Of Glycerol By Product From Transesterification Of Waste Cooking Oil As A Cosurfactant In Nanocream Preparation . International Journal of Science, Technology & Management [Internet]. 2021Jul.25 [cited 2024Nov.29];2(4):1258-64. Available from: https://ijstm.inarah.co.id/index.php/ijstm/article/view/264