Becoming a professional life coach
Williams Patrick, Menendez Diane SusanKniha
Citace v seznamu literatury:
WILLIAMS, Patrick a MENENDEZ, Diane Susan. Becoming a professional life coach: lessons from the Institute for Life Coach Training. A Norton professional book. New York: W.W. Norton & Co., c2007. ISBN 0393705056. Dostupné také z: http://www.loc.gov/catdir/toc/fy0713/2006046884.html.