Penner, C., & Penner, J. (1994). 52 ways to have fun, fantastic sex: A guidebook for married couples. Thomas Nelson Publishers.

Penner, Clifford, and Joyce Penner. 52 Ways to Have Fun, Fantastic Sex: A Guidebook for Married Couples. Tennessee: Thomas Nelson Publishers, 1994.

Penner, Clifford, and Joyce Penner. 52 Ways to Have Fun, Fantastic Sex: A Guidebook for Married Couples. Thomas Nelson Publishers, 1994.