The flag and heraldic code of the Philippines, illustrated  : rules and regulations implementing Republic Act. No. 8491 

 - 4th ed. 
 - Manila :  National Historical Institute,   c2004 
 - 109 p. :  ill. 
<br/><br/><label>ISBN: </label>9715381790 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Flag, Philippine.<br/>Republic Act No. 8491