Kobak, Isai. “EFFECT OF THE USE OF PLAIN YOGURT IN VARIOUS LEVEL PRODUCT QUALITY AS A STARTER ON HOMEMADE YOGURT”. Jurnal Sains Peternakan 2, no. 2 (July 9, 2015). Accessed November 25, 2024. http://ejournal.unikama.ac.id/index.php/jsp/article/view/756.