Hatcher, R. A. (2005). The essentials of contraceptive technology. Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health.
Citace podle Chicago (17th ed.)Hatcher, Robert A. The Essentials of Contraceptive Technology. Baltimore, MD: Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health, 2005.
Citace podle MLA (8th ed.)Hatcher, Robert A. The Essentials of Contraceptive Technology. Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health, 2005.
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