Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.