Widiyono, Irkham, 		Putro, Prabowo Purwono, 		-, Sarmin, 		Astuti, Pudji, AND 		Airin, Claude Mona.
" Kadar Estradiol dan Progesteron Serum, Tampilan Vulva dan Sitologi Apus Vagina Kambing Bligon Selama Siklus Birahi" <em>Jurnal Veteriner</em> [Online], Volume 12 Number 4 (30 November 2012)