Enciclopedia puertorriqueña siglo XXI. 

 - Ed. 1998. 
 - Santurce, P.R.  Caribe Grolier  1998. 
 - 6 v. :  ill., maps ;  27 cm. 
<br/><br/><label>ISBN: </label>0717251640 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Encyclopedias.<br/>Puerto Rico--History.<br/>Puerto Rico--Biography.
<br/><br/><label>LC Class. No.: </label>F1954  / .E53 1998