Não informado. (2004). Feed industry. Central Retail Feed Association.
Chicago (17e ed.) BronvermeldingNão informado. Feed Industry. Milwaukee, Wis: Central Retail Feed Association, 2004.
MLA (8e ed.) BronvermeldingNão informado. Feed Industry. Central Retail Feed Association, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.