Nabila, A.P. et al. 2026. Evaluation of the Antibacterial Activity of a Combination of Robusta Coffee (Coffea Canephora) Seed Extract and Green Grass Jelly (Cyclea Barbata Miers) Leaf Extract Against Propionibacterium Acnes. JURNAL KESEHATAN, SAINS, DAN TEKNOLOGI (JAKASAKTI). 5, 2 (Aug. 2026), 410–424. DOI:https://doi.org/10.36002/js.v5i2.5749.