参考文献
University of Michigan Health System. Birth control methods. Patient Education, Health Topics. http://www.uofmhealth.org/health-library/hw237864#hw237867.
UpToDate, Inc. Overview of contraception. UpToDateOnline17.2, http://www.utdol.com/online/content/topic.do?topicKey=gen_gyne/3029&selectedTitle=1~150&source=search_result.
UpToDate, Inc. Birth control: Which method is right for me? UpToDateOnline17.2, http://www.utdol.com/online/content/topic.do?topicKey=gen_gyne/3029&selectedTitle=1~150&source=search_result#PATIENT_INFORMATION.
UpToDate, Inc. Emergency contraception (Morning After Pill). UpToDateOnline17.2, http://www.utdol.com/online/content/topic.do?topicKey=wom_issu/12677.
北村邦夫. 特集, 思春期の諸問題 10.避妊, 産科と婦人科. 75(5):587-595. 2008.
北村邦夫. これからの避妊法. 産婦人科治療. 89(1):61-68. 2004.
香山浩二. 75.避妊法. 産婦人科治療. 88:841-848. 2004.
The Society of Obstetricians and Gynaecologists of Canada. Adults contraception. http://sexualityandu.ca.