Philippines. National Historical Institute. (1994). Historical markers: Regions V-XII. National Historical Institute.
Style de citation Chicago (17e éd.)Philippines. National Historical Institute. Historical Markers: Regions V-XII. Manila: National Historical Institute, 1994.
Style de citation MLA (9e éd.)Philippines. National Historical Institute. Historical Markers: Regions V-XII. National Historical Institute, 1994.
Attention : ces citations peuvent ne pas être correctes à 100%.