Purwanto, Purwanto, AND 		Susilawati, I Dewa.
" Induksi Streptococcus mutans terhadap Aktivitas Proteinase Netrofil pada Degradasi Kolagen Tipe IV  (Induction of Streptococcus mutans on Neutrophil Proteinase Activity in Degradation of Type IV Collagen)  " <em>Pustaka Kesehatan</em> [Online], Volume 2 Number 1 (10 January 2014)