Hatim, Afra, 		Siswomihardjo, Widowati, AND 		Sunarintyas, Siti.
" Pengaruh Lama Perendaman dalam Obat Kumur Terhadap Kekerasan Polyethylene Fiber-Reinforced Composites" <em>Jurnal Material Kedokteran Gigi</em> [Online], Volume 7 Number 2 (1 September 2018)