D. Valentin, D. Ratnasari, A. Az-zahraa, T. N. Cahyani, T. P. Shella, and M. A. Adzkia, “Antioxidant Activity of Gel Formulations Containing Various Plant Leaf Extracts: A Review”, J. Pijar.MIPA, vol. 20, no. 1, pp. 141–147, Jan. 2025.