Aji, Nur, et al. “Antioxidant and Anti-Propionibacterium Acnes Activities of Citronella Oil and Clove Oil, and Their Formulation Into Emulgel”. PHARMACY: Jurnal Farmasi Indonesia (Pharmaceutical Journal of Indonesia), vol. 20, no. 1, Aug. 2023, pp. 64-70, doi:10.30595/pharmacy.v0i0.12629.