Elman Maulana, ⁠Tatiana Siska Wardani, & ⁠Bagas Ardiyantoro. (2026). 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. International Journal of Health Engineering and Technology, 4(6). https://doi.org/10.55227/ijhet.v4i6.657