1. Haavio-Mannila E, Kontula O. Correlates of increased sexual satisfaction. Arch Sex Behav. 1997;26:399–419. https://doi.org/10.1023/A:1024591318836.
2. Wade LD, Kremer EC, Brown J. The incidental orgasm: the presence of clitoral knowledge and the absence of orgasm for women. Women Health. 2005;42:117–38. https://doi.org/10.1300/J013v42n01_07.
3. Kopun F. Mind the ‘orgasm gap.’ The Star 2010. https://www.thestar.com/life/fashion_style/2010/10/06/mind_the_orgasm_gap.html. Accessed 13 Oct 2019.
4. Herbenick D. 64% of women had an orgasm the last time they had sex. Men’s Health 2010. https://www.menshealth.com/sex-women/a19540631/64-of-women-had-an-orgasm-the-last-time-they-had-sex. Accessed 13 Oct 2019.
5. Sultan A. New sex survey bust a few myths but reaffirms orgasm gap. St Louis Post-Dispatch 2010. https://www.stltoday.com/lifestyles/relationships-and-special-occasions/new-sex-survey-busts-a-few-myths-but-reaffirms-orgasm/article_abab27ba-cfe8-11df-93be-00127992bc8b.html. Accessed 13 Oct 2019.