Citazione Stile APA (7a Edizione)

Villegas, V. E. (1965). Types and breeds of farm animals, how to judge and select them. Philippine Education.

Citazione stile Chigago Style (17a edizione)

Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Manila: Philippine Education, 1965.

Citatione MLA (9a ed.)

Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Philippine Education, 1965.