Hatcher A., R. (1997). The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Population Information Program.
Chicago-referens (17:e uppl.)Hatcher A., Robert. The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Baltimore: Population Information Program, 1997.
MLA-referens (9:e uppl.)Hatcher A., Robert. The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Population Information Program, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.