Hatcher, R. A. (2001). The Essentials of contraceptive technology. Population Information Program, Center for Communication Programs, John Hopkins University, School of Public Health.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHatcher, Robert A. The Essentials of Contraceptive Technology. Baltimore, Md: Population Information Program, Center for Communication Programs, John Hopkins University, School of Public Health, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHatcher, Robert A. The Essentials of Contraceptive Technology. Population Information Program, Center for Communication Programs, John Hopkins University, School of Public Health, 2001.
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