The handbook for working with difficult groups how they are difficult, why they are difficult and what you can do about it /

Julkaistu 2010

Understanding difficult people : strategies for coping with difference /

Tekijä Barrow, Iris
Julkaistu 1997

An educators guide to difficult parents /

Tekijä Wilde, Jerry, 1962-
Julkaistu 2000

The little book of dialogue for difficult subjects : a practical, hands-on guide /

Tekijä Schirch, Lisa
Julkaistu 2007