RPG II and RPG III structured programming / 
by Nancy Stern ... [ et al.]. 
 - 2nd ed. 
 - New York, N.Y. :  John Wiley & Sons,  1991. 
 - x, 685 p. 
<br/><br/><label>ISBN: </label>0471521965 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science.<br/>RPG (Computer program language).<br/>Structured programming.