Hatcher A., R. (1997). The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Population Information Program.
Citazione stile Chigago Style (17a edizione)Hatcher A., Robert. The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Baltimore: Population Information Program, 1997.
Citatione MLA (9a ed.)Hatcher A., Robert. The Essentials of Contraceptive Technology; A Handbook for Clinic Staff. Population Information Program, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.