Emans, S. Jean. "Physical Examination of the Child and Adolescent" (2000) in Evaluation of the Sexually Abused Child: A Medical Textbook and Photographic Atlas, Second edition, Oxford University Press. 61–65
Perlman, Sally E.; Nakajyma, Steven T.; Hertweck, S. Paige. Clinical protocols in pediatric and adolescent gynecology. Parthenon. 2004: 131. ISBN 1-84214-199-6.
The Hymen. University of California, Santa Barbara. [2009-02-09]. （原始內容存檔於2009-05-09）. The hymen oftentimes, though not always, rips or tears the first time a female engages in penetrative intercourse, which may cause some temporary bleeding and slight discomfort.
Janell L. Carroll. Sexuality Now: Embracing Diversity. Cengage Learning. 1 January 2012: 155–. ISBN 1-111-83581-0. In reality, many activities can tear the hymen, including vigorous exercise, horseback or bike riding, masturbation or the insertion of tampons or other objects into the vagina
Blackledge, Catherine. The Story of V. Rutgers University Press. 2004. ISBN 978-0-8135-3455-8. Hymens, or vaginal closure membranes or vaginal constrictions, as they are often referred to, are found in a number of mammals, including llamas, ... 含有內容需登入查看的頁面 (link)
This band of hymen would not permit the stallion to breed the mare. After transecting this tissue, the vagina was open allowing breeding to occur. Persistent Hymen. [2018-04-24]. （原始內容存檔於2018-04-24）.
McCann, J; Rosas, A. and Boos, S. (2003) "Child and adolescent sexual assaults (childhood sexual abuse)" in Payne-James, Jason; Busuttil, Anthony and Smock, William (eds). Forensic Medicine: Clinical and Pathological Aspects, Greenwich Medical Media: London, a)p.453, b)p.455 c)p.460. ISBN978-1-84-110026-5
Heger, Astrid; Emans, S. Jean; Muram, David. Evaluation of the Sexually Abused Child: A Medical Textbook and Photographic Atlas Second. Oxford University Press. 2000: 116. ISBN 978-0-19-507425-3.
Healey, Andrew. Embryology of the female reproductive tract. Mann, Gurdeep S.; Blair, Joanne C.; Garden, Anne S. (編). Imaging of Gynecological Disorders in Infants and Children. Medical Radiology. Springer. 2012: 21–30. ISBN 978-3-540-85602-3. doi:10.1007/978-3-540-85602-3.
Loeber, Olga. Over het zwaard en de schede; bloedverlies en pijn bij de eerste coïtus Een onderzoek bij vrouwen uit diverse culturen(PDF). Tijdschrift voor Seksuologie 32. 2008: 129–137 [2018-09-07]. （原始內容存檔(PDF)於2019-11-05） （荷蘭語）. De vragenlijsten werden verzameld in de periode van maart 2005 tot maart 2006.487 Questionnaires were collected: 173 women were Dutch, 132 Middle Eastern and Moroccan, 39 African, 32 Eastern European, 39 Asian and 53 from Middle and South America.Women from the Netherlands reported much less pain and blood loss than women from foreign countries.Women from countries where blood loss often is regarded as a proof of virginity still reported in 26.5% of the cases to have had no blood loss at first intercourse. 30% of the entire group reported severe pain: especially African women (49%) and women from the Middle East and Morocco (45%) report this. 19 % of Dutch women report severe pain.The relation between blood loss and pain is different for the different groups suggesting other than biological reasons.The use of tampons prior to first intercourse did not have a significant influence on the experienced blood loss.
