Philippines. National Historical Institute. (2008). The Flag and heraldic code of the Philippines illustrated: Rules and regulations implementing Republic Act No. 8491 (4th ed.). National Historical Institute.
Citação norma ChicagoPhilippines. National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. 4th ed. Manila: National Historical Institute, 2008.
Citação norma MLAPhilippines. National Historical Institute. The Flag and Heraldic Code of the Philippines Illustrated: Rules and Regulations Implementing Republic Act No. 8491. 4th ed. National Historical Institute, 2008.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.