Joann S. DeLora. Understanding Sexual Interaction. Houghton Mifflin (Original from the University of Virginia) [1981], 2008 — 123-bet. ISBN 978-0-395-29724-7. Qaraldi: 6-noyabr 2011-yil. „Many men find anal intercourse more exciting than penile-vaginal intercourse because the anal opening is usually smaller and tighter than the vagina. Probably the forbidden aspect of anal intercourse also makes it more exciting for some people.“
Kimberly R. McBride; J. Dennis Fortenberry (March 2010). „Heterosexual anal sexuality and anal sex behaviors: a review“. Journal of Sex Research. 47-jild, № 2–3. 123–136-bet. doi:10.1080/00224490903402538. PMID20358456.
Goldstone, Stephen E.; Welton, Mark L. (2004). „Sexually Transmitted Diseases of the Colon, Rectum, and Anus“. Clin Colon Rectal Surg. 17-jild, № 4. 235–239-bet. doi:10.1055/s-2004-836944. PMC2780055. PMID20011265.
Carballo-Diéguez, Alex; Stein, Z.; Saez, H.; Dolezal, C.; Nieves-Rosa, L.; Diaz, F. (2000). „Frequent use of lubricants for anal sex among men who have sex with men“. American Journal of Public Health. 90-jild, № 7. 1117–1121-bet. doi:10.2105/AJPH.90.7.1117. PMC1446289. PMID10897191.
nih.gov
pubmed.ncbi.nlm.nih.gov
Kimberly R. McBride; J. Dennis Fortenberry (March 2010). „Heterosexual anal sexuality and anal sex behaviors: a review“. Journal of Sex Research. 47-jild, № 2–3. 123–136-bet. doi:10.1080/00224490903402538. PMID20358456.
Goldstone, Stephen E.; Welton, Mark L. (2004). „Sexually Transmitted Diseases of the Colon, Rectum, and Anus“. Clin Colon Rectal Surg. 17-jild, № 4. 235–239-bet. doi:10.1055/s-2004-836944. PMC2780055. PMID20011265.
Carballo-Diéguez, Alex; Stein, Z.; Saez, H.; Dolezal, C.; Nieves-Rosa, L.; Diaz, F. (2000). „Frequent use of lubricants for anal sex among men who have sex with men“. American Journal of Public Health. 90-jild, № 7. 1117–1121-bet. doi:10.2105/AJPH.90.7.1117. PMC1446289. PMID10897191.
ncbi.nlm.nih.gov
Goldstone, Stephen E.; Welton, Mark L. (2004). „Sexually Transmitted Diseases of the Colon, Rectum, and Anus“. Clin Colon Rectal Surg. 17-jild, № 4. 235–239-bet. doi:10.1055/s-2004-836944. PMC2780055. PMID20011265.
Carballo-Diéguez, Alex; Stein, Z.; Saez, H.; Dolezal, C.; Nieves-Rosa, L.; Diaz, F. (2000). „Frequent use of lubricants for anal sex among men who have sex with men“. American Journal of Public Health. 90-jild, № 7. 1117–1121-bet. doi:10.2105/AJPH.90.7.1117. PMC1446289. PMID10897191.