↑ 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. (2004). Clinical protocols in pediatric and adolescent gynecology. Parthenon. p. 131. ISBN1842141996. Unknown parameter |coauthors= ignored (|author= suggested) (help)
↑ "The Hymen". University of California, Santa Barbara. สืบค้นเมื่อ 2009-02-09. 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.
↑ . Emma Curtis, Camille San Lazaro. "Appearance of the hymen in adolescents is not well documented". BMJ : British Medical Journal (in อังกฤษ). 318 (7183). 1999-02-27. We agree with Rogers and Stark that so called rupture and bleeding of the hymen is not to be routinely expected after first sexual intercourse.
↑ Perlman, Sally E.; Nakajyma, Steven T.; Hertweck, S. Paige (2004). Clinical protocols in pediatric and adolescent gynecology. Parthenon. p. 131. ISBN1-84214-199-6.
↑ Knight, Bernard (1997). Simpson's Forensic Medicine (11th ed.). London: Arnold. p. 114. ISBN0-7131-4452-1.
