Y. Elina, A. Ulfa, and M. Angin, “Formulation and Stability Testing of a Combination Cream Preparation Containing Centella asiatica (L.) Urb. Extract and Citrus limon (L.) Osbeck Peel Extract with Variations in Tea”, ssj, vol. 4, no. 4, pp. 851-866, Oct. 2026.