Essentials of the 1987 constitution/ 
Carmelo V. Sison 
 - Quezon City:  C & E Publishing,  2005. 
 - vii, 269 pages;  22 cm. 
<br/><br/><label>ISBN: </label>9715844111 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Constitutional law--Philippines
<br/><br/><label>LC Class. No.: </label>Fil. JQ 1426 .Si623 2005