Villanueva, Rene O. <br/><br/>
Apat na dula 

 - Quezon City  UP Press  1998 
 - 196  p. 
<br/><br/><label>ISBN: </label>971542158 
<br/><br/><label>Dewey Class. No.: </label>FIL 899.2112 V712a 1998 c.1