Mænd er fra Mars, kvinder er fra Venus: To køn, To sprog, To verdener - Sådan når I hinandenJohn Gray4.2
What Your Mother Couldn't Tell You and Your Father Didn't Know: Advanced Relationship Skills for Better Communication and Lasting IntimacyJohn Gray4.2
Mars and Venus Starting Over: A Practical Guide for Finding Love Again After a Painful Breakup, Divorce, or the Loss of a Loved OneJohn Gray4.2
A Summary of Men Are from Mars, Women Are from Venus: The Classic Guide to Understanding the Opposite SexJohn Gray4.1