Villegas, V. E. (1965). Types and breeds of farm animals, how to judge and select them. Philippine Education.
Lua i Stíl Chicago (17ú heag.)Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Manila: Philippine Education, 1965.
Lua MLA (9ú heag.)Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Philippine Education, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.