Thomas David ...[et al.]. <br/><br/>
Programming ruby / 

 - 2nd ed. 
 -  Raleigh, Pragmatic Bookshelf,  c2005. 
 - xxxii, 830p. ;  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0974514055 
<br/><br/><label>Dewey Class. No.: </label>005.133