Cita APA (7th ed.)

Hatcher, R. A., D., M., & Rinehart, M. W. (1997). The Essentials of Contraceptive technology. Population Information Program.

Cita Chicago (17th ed.)

Hatcher, Robert A., M. D., i M.P.H. Ward Rinehart. The Essentials of Contraceptive Technology. Population Information Program, 1997.

Cita MLA (9th ed.)

Hatcher, Robert A., et al. The Essentials of Contraceptive Technology. Population Information Program, 1997.