Philippines & Philippines. (2018). The Flag and Heraldic Code of the Philippines: Illustrated : rules and regulations implementing Republic Act no. 8491 (Revised edition.). National Historical Commission of the Philippines.
Cita Chicago (17th ed.)Philippines i Philippines. The Flag and Heraldic Code of the Philippines: Illustrated : Rules and Regulations Implementing Republic Act No. 8491. Revised edition. Ermita, Manila, Philippines: National Historical Commission of the Philippines, 2018.
Cita MLA (9th ed.)Philippines i Philippines. The Flag and Heraldic Code of the Philippines: Illustrated : Rules and Regulations Implementing Republic Act No. 8491. Revised edition. National Historical Commission of the Philippines, 2018.
Atenció: Aquestes cites poden no estar 100% correctes.