Gordon, S., & Libby, R. W. (1976). Sexuality today and tomorrow: Contemporary issues in human sexuality. Duxbury.
Lua i Stíl Chicago (17ú heag.)Gordon, Sol, agus Roger W. Libby. Sexuality Today and Tomorrow: Contemporary Issues in Human Sexuality. California: Duxbury, 1976.
Lua MLA (9ú heag.)Gordon, Sol, agus Roger W. Libby. Sexuality Today and Tomorrow: Contemporary Issues in Human Sexuality. Duxbury, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.