Philippines. Bureau of Coast and Geodetic Survey. (1983). Baggao, Philippines. Bureau of Coast and Geodetic Survey.
Cita Chicago (17th ed.)Philippines. Bureau of Coast and Geodetic Survey. Baggao, Philippines. Manila: Bureau of Coast and Geodetic Survey, 1983.
Cita MLA (9th ed.)Philippines. Bureau of Coast and Geodetic Survey. Baggao, Philippines. Bureau of Coast and Geodetic Survey, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.