conflict management by Benno Heussen
Dr. Benno Heussen
CC BY-SA 3.0
<a href="https://en.wikipedia.org/wiki/de:Wikipedia:Nichtadministrative_Konfliktbew%C3%A4ltigung/Guide-Camp" class="extiw" title="w:de:Wikipedia:Nichtadministrative Konfliktbewältigung/Guide-Camp">Guide Camp 2014</a>