Fahmi, Aliyah, et al. “The Antibacterial Activity Test Comparison of Green and Black Tea Ethanol Extract (Camellia Sinensis) Against Propionibacterium Acnes”. Science Midwifery, vol. 10, no. 2, Apr. 2022, pp. 1881-5, doi:10.35335/midwifery.v10i2.544.