St. Ratnah et al. 2023. Formulation, Physical Quality, and Microbial Contamination Tests of Anti-Acne Cream from Longan (Euphoria longan [Lour. Steud.]) Seed Extract: http://www.doi.org/10.26538/tjnpr/v7i7.5. Tropical Journal of Natural Product Research (TJNPR). 7, 7 (Jul. 2023), 3297–3305.