Não informado. Reports on Population/Family Planning. Population Council.
Chicago-Zitierstil (17. Ausg.)Não informado. Reports on Population/Family Planning. New York: Population Council.
MLA-Zitierstil (8. Ausg.)Não informado. Reports on Population/Family Planning. Population Council.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.