Contemporary Business Mathematics with Canadian applications   / 
S.A Hummelbrunner . 
 - 4th ed. 
 - Ontario :  Prentice Hall Canada ,  1994. 
 - xi,831 p,; 
<br/><br/><label>ISBN: </label>0132875829 
<br/><br/><label>LC Class. No.: </label>HF5691  / .H85 1994