APA (7e ed.) Bronvermelding

Philippines. National Historical Institute. (1994). Historical markers: Regions V-XII. National Historical Institute.

Chicago (17e ed.) Bronvermelding

Philippines. National Historical Institute. Historical Markers: Regions V-XII. Manila: National Historical Institute, 1994.

MLA (9e ed.) Bronvermelding

Philippines. National Historical Institute. Historical Markers: Regions V-XII. National Historical Institute, 1994.

Let op: Deze citaties zijn niet altijd 100% accuraat.