Studies in the Psychology of Sex, Volume 1: The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism Studies in the Psychology of Sex, Volume 1: The Evolution of Modesty; The Phenomena of Sexual Periodicity; Auto-Erotism Havelock Ellis
Studies in the Psychology of Sex, Volume 2: Sexual Inversion Studies in the Psychology of Sex, Volume 2: Sexual Inversion Havelock Ellis
