Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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