TY  - BOOK
AU  - Villanueva,Rene O.
TI  - Apat na dula
U1  - 899.2112 
PY  - 1998///
CY  - Manila
PB  - University of the Philippine Press
KW  - Drama
KW  - Philippines
KW  - Play
KW  - Theatre
N1  - ISBN 971-542-158-X
ER  -