Philippines. National Historical Institute. (2002). The Flag and heraldic code of the Philippines illustrated: Rules and regulations implementing Republic Act No. 8491. National Historical Institute.
Chicago-Zitierstil (17. Ausg.)Philippines. National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. Manila: National Historical Institute, 2002.
MLA-Zitierstil (9. Ausg.)Philippines. National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. National Historical Institute, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.