Hatcher, R. A. (1997). The essentials of contraceptive technology. Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিHatcher, Robert Anthony. The Essentials of Contraceptive Technology. Baltimore, MD: Population Information Program, Center for Communication Programs, Johns Hopkins School of Public Health, 1997.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিHatcher, 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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