Sawitri, M. E. (2012) “KAJIAN PENGGUNAAN EKSTRAK SUSU KEDELAI TERHADAP KUALITAS KEFIR SUSU KAMBING”, TERNAK TROPIKA Journal of Tropical Animal Production, 12(1), pp. 15–21. Available at: https://ternaktropika.ub.ac.id/index.php/tropika/article/view/128 (Accessed: 20 June 2025).