1 http://www.biography.com/people/sigmund-freud-9302400
2 http://www.femininleben.ch/liebe/sex/der-weibliche-orgasmus-mythen-und-missbrauch-352
3 Kinsey, A.: Sexual behaviour in the human female, W. B. Saunders Company, 1953
4 Masters W. H. & Johnson V. E.: Human sexual response, Little Brown, 1966
5 O'Connel, H.: Anatomy of the clitoris, Journal of Urology, 2005
6 http://www.sexmedpedia.com/artikel/orgasmus-und-seine-mythen
7 https://www.lilli.ch/orgasmus_klitoral_vaginal/