Sivin, I. (1974). Contraception and fertility change in the international postpartum program. Population Council; [distributed by Key Book Service, Bridgeport, Conn..
Chicago-referens (17:e uppl.)Sivin, Irving. Contraception and Fertility Change in the International Postpartum Program. [New York]: Population Council; [distributed by Key Book Service, Bridgeport, Conn., 1974.
MLA-referens (8:e uppl.)Sivin, Irving. Contraception and Fertility Change in the International Postpartum Program. Population Council; [distributed by Key Book Service, Bridgeport, Conn., 1974.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.