Não informado. (1954). Index of Current Research on Pigs. Commonwealth Agricultural Bureau.
Chicago (17e ed.) BronvermeldingNão informado. Index of Current Research on Pigs. Wallingford, Inglaterra: Commonwealth Agricultural Bureau, 1954.
MLA (8e ed.) BronvermeldingNão informado. Index of Current Research on Pigs. Commonwealth Agricultural Bureau, 1954.
Let op: Deze citaties zijn niet altijd 100% accuraat.