Não informado. (1986). International Hatchery Practice. Positive Action Publications.
Chicago (17e ed.) BronvermeldingNão informado. International Hatchery Practice. Driffield, Inglaterra: Positive Action Publications, 1986.
MLA (8e ed.) BronvermeldingNão informado. International Hatchery Practice. Positive Action Publications, 1986.
Let op: Deze citaties zijn niet altijd 100% accuraat.