Ningrum, Luluk, Madi Hartono, Sri Suharyati, and Siswanto Siswanto. 2020. “REPEAT BREEDER PADA SAPI KRUI DI KECAMATAN PESISIR SELATAN KABUPATEN PESISIR BARAT”. Jurnal Riset Dan Inovasi Peternakan (Journal of Research and Innovation of Animals) 4 (3), 126-33. http://jrip.fp.unila.ac.id/index.php/JRIP/article/view/132.