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.
Cytowanie według stylu Chicago (wyd. 17)Philippines. 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.
Cytowanie według stylu MLA (wyd. 9)Philippines. 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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..