Elman Maulana; ⁠Tatiana Siska Wardani; ⁠Bagas Ardiyantoro. Antibacterial Activity Test Of Extract, N-Hexane Fraction, Ethyl Acetate, And Water Of Tangkalak Guava Leaves (Bellucia Pentamera Naudin) Against Staphylococcus Epidermidis ATCC 12228 Bacteria. IJHET 2026, 4.