Riso, Don Richard <br/><br/>
Personality types :  using the enneagram for self-discovery 

 - Boston  Houghton Mifflin  1987 
 - xii, 370 p. 
<br/><br/><label>ISBN: </label>0395405750 0395444845 
<br/><br/><label>Dewey Class. No.: </label>155.26  / RIS