Penner, C. (1997). The married guy's guide to great sex: Building a passionate, intimate and fun love life. Tyndale House Publishers.
Chicago-Zitierstil (17. Ausg.)Penner, Clifford. The Married Guy's Guide to Great Sex: Building a Passionate, Intimate and Fun Love Life. Illinois: Tyndale House Publishers, 1997.
MLA-Zitierstil (9. Ausg.)Penner, Clifford. The Married Guy's Guide to Great Sex: Building a Passionate, Intimate and Fun Love Life. Tyndale House Publishers, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.