"Vernon, C. Marshall." <br/><br/>
AMCQ / 
C. Marshall. Vrnon. 
 - 2nd ed. 
 - Massachusetts :  "Blackwell Publishing,"  1997. 
 - 410 p. : 
<br/><br/><label>ISBN: </label>0867933771 
<br/><br/><label>LC Class. No.: </label>R 728.8  / .A56 1997