Sarrel, L. J., & Sarrel, P. M. (1984). Sexual turning points: The seven stages of adult sexuality. Macmillan.
Lua i Stíl Chicago (17ú heag.)Sarrel, Lorna J., agus Philip M. Sarrel. Sexual Turning Points: The Seven Stages of Adult Sexuality. New York: Macmillan, 1984.
Lua MLA (9ú heag.)Sarrel, Lorna J., agus Philip M. Sarrel. Sexual Turning Points: The Seven Stages of Adult Sexuality. Macmillan, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.