Kurniawan, R. (2020) “Antibacterial Activity Test Of ∆-Guaiene Patchouli oil Against Bacteria Staphylococcus aureus and Staphylococcus epidermis”, Gontor Agrotech Science Journal, 6(3), pp. 425–436. doi: 10.21111/agrotech.v6i3.5052.