Hatcher, R. A. (1997). The essentials of contraceptive technology. Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHatcher, Robert Anthony. The Essentials of Contraceptive Technology. Baltimore, MD: Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHatcher, Robert Anthony. The Essentials of Contraceptive Technology. Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health, 1997.
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