Mutual Masturbation - A biographical collection of personal data for a psychological and sociological study of mutual masturbating as it relates to the habits for both men and women.
1 2 Michael W. Ross, Lorna D. Channon-Little, B. R. Simon Rosser (2000). Sexual Health Concerns: Interviewing and History Taking for Health Practitioners. University of Michigan. p. 45. ISBN0803606680.CS1 maint: uses authors parameter (link)CS1 maint: Uses authors parameter (link)
1 2 Robert Crooks; Karla Baur (2010). Our Sexuality. Cengage Learning. pp. 286–289. ISBN0495812943. สืบค้นเมื่อ August 30, 2012. Noncoital forms of sexual intimacy, which have been called outercourse, can be a viable form of birth control. Outercourse includes all avenues of sexual intimacy other than penile–vaginal intercourse, including kissing, touching, mutual masturbation, and oral and anal sex.
1 2 3 4 5 See here onwards and pages 47-49 for views on what constitutes virginity loss and therefore sexual intercourse or other sexual activity; source discusses how gay and lesbian individuals define virginity loss, and how the majority of researchers and heterosexuals define virginity loss/"technical virginity" by whether or not a person has engaged in penile-vaginal sex. Empty citation (help)
1 2 Bryan Strong; Christine DeVault; Theodore F. Cohen (2010). The Marriage and Family Experience: Intimate Relationship in a Changing Society. Cengage Learning. p. 186. ISBN0-534-62425-1. สืบค้นเมื่อ October 8, 2011. Most people agree that we maintain virginity as long as we refrain from sexual (vaginal) intercourse. But occasionally we hear people speak of 'technical virginity' [...] Data indicate that 'a very significant proportion of teens ha[ve] had experience with oral sex, even if they haven't had sexual intercourse, and may think of themselves as virgins' [...] Other research, especially research looking into virginity loss, reports that 35% of virgins, defined as people who have never engaged in vaginal intercourse, have nonetheless engaged in one or more other forms of heterosexual sexual activity (e.g., oral sex, anal sex, or mutual masturbation).
1 2 Joseph Gross, Michael (2003). Like a Virgin. The Advocate/Here Publishing. pp. 44–45. 0001-8996. สืบค้นเมื่อ March 12, 2011. Italic or bold markup not allowed in: |publisher= (help)
↑ Boston Women's Health Book Collective, Judy Norsigian (2008). Our Bodies, Ourselves: Menopause. Simon & Schuster. p. 143. ISBN1439103437. สืบค้นเมื่อ September 1, 2013. For some women, outercourse, defined as lovemaking without vaginal or anal penetration...CS1 maint: uses authors parameter (link)
↑ Lois White, Gena Duncan, Wendy Baumle (2011). Medical Surgical Nursing: An Integrated Approach, 3rd ed. Cengage Learning. p. 1161. ISBN1133707149. สืบค้นเมื่อ September 1, 2013. Some people consider outercourse to mean sex play without vaginal intercourse, while others consider this to mean sex play with no penetration at all (vaginal, oral, or anal).CS1 maint: uses authors parameter (link)
↑ M., Hodge; Evelyn Blackwood; Jeffrey M. Dickemann; Doug Jones; Frank Muscarella; Paul L. Vasey; Walter L. Williams (2000). "The Evolution of Human Homosexual Behavior". Current Anthropology. 41: 385–413. doi:10.1086/300145. PMID10768881.
