Cahyaningtyas, D., N. Puspawati, and R. Binugraheni. “Antibacterial Activity Test of Secang Wood (Caesalpinia Sappan L.) Ethanolic Extract Against Staphylococcus Aureus”. Biomedika, Vol. 12, no. 2, Sept. 2019, pp. 205-16, doi:https://doi.org/10.31001/biomedika.v12i2.614.