Institute of American Poultry Industries. The U.S. egg & poultry magazine. Institute of American Poultry Industries.
Chicago-referens (17:e uppl.)Institute of American Poultry Industries. The U.S. Egg & Poultry Magazine. Chicago: Institute of American Poultry Industries.
MLA-referens (8:e uppl.)Institute of American Poultry Industries. The U.S. Egg & Poultry Magazine. Institute of American Poultry Industries.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.