Director's and officer's complete letter book / 
by Prentice Hall editorial staff L. Edward Purcell, editor 
 - 3rd ed. 
 - Englewood Cliffs, N. J. :  Prentice Hall,  1991 
 - xxii, 502 p. :  29 cm. 
<br/><br/><label>ISBN: </label>0132181320