Hatcher, R. A., D., M., & Rinehart, M. W. (1997). The Essentials of Contraceptive technology. Population Information Program.
Citazione stile Chigago Style (17a edizione)Hatcher, Robert A., M. D., e M.P.H. Ward Rinehart. The Essentials of Contraceptive Technology. Population Information Program, 1997.
Citatione MLA (9a ed.)Hatcher, Robert A., et al. The Essentials of Contraceptive Technology. Population Information Program, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.