Ferrell, O. C..
Business: a changing world /
O.C. Ferrell, Geoffrey Hirt, Linda Ferrell 
. - 6th edition 
. - Boston : Irwin,  McGraw-Hill,  2008 
. - xxxiv, 586 p.  ill., tab., schem.  25 cm. 
<br/>К.: Бібліогр. : c. 531-550, Index 
<br/><label>  ISBN: </label>978-0-07-351166-5