Não informado. (1972). Feed industry review. Central Retail Feed Association.
Chicago-viite (17. p.)Não informado. Feed Industry Review. Milwaukee, Wis: Central Retail Feed Association, 1972.
MLA-viite (8. p.)Não informado. Feed Industry Review. Central Retail Feed Association, 1972.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.