Philippines. Bureau of Coast and Geodetic Survey. (1987). Alabang. Bureau of Coast and Geodetic Survey [distributor].
Cita Chicago (17th ed.)Philippines. Bureau of Coast and Geodetic Survey. Alabang. Manila: Bureau of Coast and Geodetic Survey [distributor], 1987.
Cita MLA (9th ed.)Philippines. Bureau of Coast and Geodetic Survey. Alabang. Bureau of Coast and Geodetic Survey [distributor], 1987.
Atenció: Aquestes cites poden no estar 100% correctes.