Business :  a Changing World / 
Ferrel , OC ; Hirt , Geoffrey ; Linda Ferrell  
 - 7th ed. 
 - Boston :  McGraw-Hill Ryerson ,  2009. 
 - xxxiv,588 p,: 
<br/><br/><label>ISBN: </label>9780073511726 
<br/><br/><label>LC Class. No.: </label>HF1008  / .F47  2009