Não informado. (1951). Feed Management. Watt Publishing.
Chicago (17e ed.) BronvermeldingNão informado. Feed Management. Sea Isle City, NJ: Watt Publishing, 1951.
MLA (8e ed.) BronvermeldingNão informado. Feed Management. Watt Publishing, 1951.
Let op: Deze citaties zijn niet altijd 100% accuraat.