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.
Citace podle Chicago (17th ed.)Philippines a 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.
Citace podle MLA (9th ed.)Philippines a 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.
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