APA (7e ed.) Bronvermelding

Philippines. Bureau of Coast and Geodetic Survey. (1983). Ilagan. Philippine Coast and Geodetic Survey.

Chicago (17e ed.) Bronvermelding

Philippines. Bureau of Coast and Geodetic Survey. Ilagan. Manila: Philippine Coast and Geodetic Survey, 1983.

MLA (9e ed.) Bronvermelding

Philippines. Bureau of Coast and Geodetic Survey. Ilagan. Philippine Coast and Geodetic Survey, 1983.

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