APA (7e ed.) Bronvermelding

Alan Guttmacher Institute. (1981). Teenage pregnancy: The problem that hasn?t gone away. Alan Guttmacher Institute.

Chicago (17e ed.) Bronvermelding

Alan Guttmacher Institute. Teenage Pregnancy: The Problem That Hasn?t Gone Away. New York: Alan Guttmacher Institute, 1981.

MLA (9e ed.) Bronvermelding

Alan Guttmacher Institute. Teenage Pregnancy: The Problem That Hasn?t Gone Away. Alan Guttmacher Institute, 1981.

Let op: Deze citaties zijn niet altijd 100% accuraat.