Satria, Yudi Eka, 		Yusuf, Tuty Laswardi, AND 		., Amrozi.
" Penentuan Waktu Optimal Kawin Berdasarkan Ultrasonografi Ovarium dengan Gejala Klinis Estrus pada Kambing Peranakan Etawa (DETERMINATION OF OPTIMAL MATING TIME BASED ON OVARY ULTRASONOGRAPHY WITH ESTROUS CLINICAL SYMPTOMS IN ETAWA CROSSBREED GOAT)" <em>Jurnal Veteriner</em> [Online], Volume 17 Number 1 (2 March 2016)