Kammerer-Doak, Dorothy; Rogers, Rebecca G. Obstetrics and Gynecology Clinics of North America, 35, 2, 6-2008, pàg. 169–183. DOI: 10.1016/j.ogc.2008.03.006. PMID: 18486835. «Most women report the inability to achieve orgasm with vaginal intercourse and require direct clitoral stimulation ... About 20% have coital climaxes...»
Mah, Kenneth; Binik, Yitzchak M Clinical Psychology Review, 21, 6, 07-01-2001, pàg. 823–856. DOI: 10.1016/S0272-7358(00)00069-6. PMID: 11497209. «Women rated clitoral stimulation as at least somewhat more important than vaginal stimulation in achieving orgasm; only about 20% indicated that they did not require additional clitoral stimulation during intercourse.»
«An Updated Definition of Rape». The United States Department of Justice Archives, 06-01-2012. Arxivat de l'original el 3 desembre 2021. [Consulta: 22 setembre 2020].
Kammerer-Doak, Dorothy; Rogers, Rebecca G. Obstetrics and Gynecology Clinics of North America, 35, 2, 6-2008, pàg. 169–183. DOI: 10.1016/j.ogc.2008.03.006. PMID: 18486835. «Most women report the inability to achieve orgasm with vaginal intercourse and require direct clitoral stimulation ... About 20% have coital climaxes...»
Mah, Kenneth; Binik, Yitzchak M Clinical Psychology Review, 21, 6, 07-01-2001, pàg. 823–856. DOI: 10.1016/S0272-7358(00)00069-6. PMID: 11497209. «Women rated clitoral stimulation as at least somewhat more important than vaginal stimulation in achieving orgasm; only about 20% indicated that they did not require additional clitoral stimulation during intercourse.»
«An Updated Definition of Rape». The United States Department of Justice Archives, 06-01-2012. Arxivat de l'original el 3 desembre 2021. [Consulta: 22 setembre 2020].