Não informado. (1972). Feed industry review. Central Retail Feed Association.
Chicago-referens (17:e uppl.)Não informado. Feed Industry Review. Milwaukee, Wis: Central Retail Feed Association, 1972.
MLA-referens (8:e uppl.)Não informado. Feed Industry Review. Central Retail Feed Association, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.