Edp:  Controls and auditing/   English . 
W.Thomas porter, william E.perry . 
 - 4th Ed. 
 - Boston :  Kent publishing company,   1984. 
 - xvii,571p.:  ill.;  24cm. 
<br/><br/><label>ISBN: </label>0534030629 
<br/><br/><label>Dewey Class. No.: </label>657.6:681.14  / POR