Marketing :  an introduction / 
by Philip Kotler, Gary Armstrong. 
 - 2nd ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1990. 
 - xxiv, 592 p. : ill. 
<br/><br/><label>ISBN: </label>0135564085 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing.<br/>Marketing--Management.