Damayanthi, E., Yopi, ., Hasinah, H., Setyawardani, T., Rizqiati, H. and Putra, S. (2014) “Karakteristik Susu Kerbau Sungai dan Rawa di Sumatera Utara”, Jurnal Ilmu Pertanian Indonesia, 19(2), pp. 67-73. Available at: http://jurnal.ipb.ac.id/index.php/JIPI/article/view/8799 (Accessed: 2July2020).