Wardani, T.S. et al. 2024. Formulation and Antibacterial Activity of Gold (Au) Nanoparticles Serum from Green Coffee (Coffea canephora var. Robusta) Bean Extract. Tropical Journal of Natural Product Research (TJNPR). 8, 9 (Oct. 2024), 8561–8570. DOI:https://doi.org/10.26538/tjnpr/v8i9.45 .