Majid, A., and N. Majid. “AKTIVITAS ANTIBAKTERI (BACTERIOSTATIC DAN BACTERICIDAL) FILTRAT DAN SEDIMEN AIR PERASAN DAUN VALOAK TERHADAP BAKTERI Salmonella Typhi”. CHMK Applied Scientific Journal, Vol. 3, no. 2, May 2020, pp. 47-53, http://cyber-chmk.net/ojs/index.php/sains/article/view/813.