Sari, Wiza Leila Puspita, et al. “Antibiotic Compound of Symbiotic Bacillus Sp1 (HA1) from Marine Sponge Haliclona Fascigera”. Jurnal Sains Farmasi & Klinis, vol. 3, no. 2, May 2017, pp. 128-33, doi:10.29208/jsfk.2017.3.2.138.