Philippines National Historical Institute. (2006). The Flag and heraldic code of the Philippines illustrated: Rules and regulations implementing Republic Act No. 8491 (3rd ed.). National Historical Institute.
Citazione stile Chigago Style (17a edizione)Philippines National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. 3rd ed. Manila: National Historical Institute, 2006.
Citatione MLA (9a ed.)Philippines National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. 3rd ed. National Historical Institute, 2006.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.