Não informado. Reports on Population/Family Planning. Population Council.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Reports on Population/Family Planning. New York: Population Council.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Reports on Population/Family Planning. Population Council.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.