A. P. A. <br/><br/>
Publication Manual 

 - 2nd ed. 
 - Washington  American Psychological Association  1974 
 - 136,8,(4)  Hb 
<br/><br/><label>ISBN: </label>0-912704 01-2 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>808.066