Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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