Yuill, Bruce. <br/><br/>
Supervision Principles and Techniques/  eng. 
Yuill, Bruce. 
 - 3rd ed. 
 - Sydney:  West Publishing Corporation,  1976. 
 - ix, 300p.:  22cm. 
<br/><br/><label>ISBN: </label>085582042x 
<br/><br/><label>Dewey Class. No.: </label>658.302  / YUI