APA (7e ed.) Bronvermelding

ebrary, Inc, & Parnell, A. M. (1989). Contraceptive use and controlled fertility: Health issues for women and children : background papers. National Academy Press.

Chicago (17e ed.) Bronvermelding

ebrary, Inc, en Allan M. Parnell. Contraceptive Use and Controlled Fertility: Health Issues for Women and Children : Background Papers. Washington, D.C.: National Academy Press, 1989.

MLA (9e ed.) Bronvermelding

ebrary, Inc, en Allan M. Parnell. Contraceptive Use and Controlled Fertility: Health Issues for Women and Children : Background Papers. National Academy Press, 1989.