Citazione Stile APA (7a Edizione)

American Berkshire association. (1883). The swine breeder's manual. The American Berkshire association.

Citazione stile Chigago Style (17a edizione)

American Berkshire association. The Swine Breeder's Manual. Springfield, Ill.: The American Berkshire association, 1883.

Citatione MLA (9a ed.)

American Berkshire association. The Swine Breeder's Manual. The American Berkshire association, 1883.