Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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