RPG II and RPG III structured programming /  
Nancy Stern, Alden Sager, Robert A. Stern 
 - 2nd. ed 
 - New York:   Wiley,   1991 
 - x, 685 p.:   ill.;   28 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0471521965 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RPG (Computer program language)<br/>Structured programming