Popkin, Gary S. <br/><br/>
Comprehensive structured COBOL. 

 - fourth edition. 
 - Boston :  PWS Kent,  1993. 
 - xvi,805p. 
<br/><br/> Accompanied by COBOL Format Reference Guide. 
<br/><br/><label>ISBN: </label>0534932703 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COBOL (Computer programme language)<br/>Structured programming.