Villegas, V. E. (1965). Types and breeds of farm animals, how to judge and select them. Philippine Education.
Chicagoスタイル(17版)引用形式Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Manila: Philippine Education, 1965.
MLA(9版)引用形式Villegas, Valente Estrada. Types and Breeds of Farm Animals, How to Judge and Select Them. Philippine Education, 1965.
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