Ghazali, Mursal, et al. “Antibacterial Activity of Methanol Extract of Sargassum Polycystum on Escherichia Coli and Staphylococcus Aureus”. Jurnal Biologi Tropis, vol. 21, no. 1, Feb. 2021, pp. 199-05, doi:10.29303/jbt.v21i1.2485.