Hatcher, R. A. (2003). The Essentials of contraceptive technology. Population Information Program, Center for Communication Programs, John Hopkins Bloomberg, 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, John Hopkins Bloomberg, School of Public Health, 2003.
Citace podle MLA (9th ed.)Hatcher, Robert A. The Essentials of Contraceptive Technology. Population Information Program, Center for Communication Programs, John Hopkins Bloomberg, School of Public Health, 2003.
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