Não informado. (2004). Reproduction. Society for the Study of Fertility.
Chicago (17e ed.) BronvermeldingNão informado. Reproduction. Cambridge, Inglaterra: Society for the Study of Fertility, 2004.
MLA (8e ed.) BronvermeldingNão informado. Reproduction. Society for the Study of Fertility, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.