Nasution, G. S., & Lubis, E. A. . (2022). Gambaran Keberadaan Bakteri Bacillus sp. Pada Ruangan Ber–AC Dan Non AC Systematic Review. Sains Medisina, 1(2), 130–140. Diambil dari https://wpcpublisher.com/jurnal/index.php/sainsmedisina/article/view/148