Fitzgerald, Michael. <br/><br/>
Ruby pocket reference 

 - Mumbai :  S P D,  1994 
 - 170. 
<br/><br/><label>ISBN: </label>8184043627  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer programmingprograms data
<br/><br/><label>Dewey Class. No.: </label>005.5  / FIT