O.I.C. Swine Breeders' Association. O.I.C. and Chester White swine grower. Yeater Pub. Co.
Chicago-referens (17:e uppl.)O.I.C. Swine Breeders' Association. O.I.C. and Chester White Swine Grower. Upland, Ind.: Yeater Pub. Co.
MLA-referens (8:e uppl.)O.I.C. Swine Breeders' Association. O.I.C. and Chester White Swine Grower. Yeater Pub. Co.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.