Elman Maulana, ⁠Tatiana Siska Wardani, and ⁠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”. International Journal of Health Engineering and Technology, vol. 4, no. 6, Mar. 2026, doi:10.55227/ijhet.v4i6.657.