“DAYA HAMBAT CACING TANAH (Lumbricus Rubellus) TERHADAP Salmonella Typhi”. Al ’Ilmi : Jurnal Pendidikan MIPA, vol. 1, no. 1, Dec. 2016, pp. 23-27, https://jurnal.radenfatah.ac.id/index.php/alilmi/article/view/968.