The skilled helper :  A systematic approach to effective helping 
Egan,gerard 
 - 4th ed.- 
 - california  brooks cole publishing company,  1990. 
 - xviii, 445p.:  ill.;  20 cm. 
<br/><br/> book 
<br/><br/><label>ISBN: </label>0534121381 
<br/><br/><label>LC Class. No.: </label>BF637  / .C6E39 1990