Barefoot, J. Kirk <br/><br/>
Undercover investigation 
J. Kirk Barefoot ; with a foreword by V. A. Leonard 
 - 2nd ed. 
 - Boston  Butterworths  1983 
 - 130 p. : ill. 22 cm. 
<br/><br/>p. 125-126 
<br/><br/><label>ISBN: </label>0409950769 
<br/><br/><label>LCCN: </label>82-14704 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Undercover operations