Phan Quang Vinh. (1977). Estrous cycle, estrus duration and ovulation time of Philippine carabaos in confinement with and without cooling facilities [microform]. Photoduplication Service, University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Phan Quang Vinh. Estrous Cycle, Estrus Duration and Ovulation Time of Philippine Carabaos in Confinement with and Without Cooling Facilities [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Lua MLA (9ú heag.)Phan Quang Vinh. Estrous Cycle, Estrus Duration and Ovulation Time of Philippine Carabaos in Confinement with and Without Cooling Facilities [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.