APA (7th ed.) Zitazioa

Spencer, S. The Pig: Breeding, Rearing, and Marketing.

Chicago Style (17th ed.) Zitazioa

Spencer, Sanders. The Pig: Breeding, Rearing, and Marketing.

MLA (9th ed.) Zitazioa

Spencer, Sanders. The Pig: Breeding, Rearing, and Marketing.

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