Philippines. Bureau of Coast and Geodetic Survey. (1983). San Guillermo, Philippines. Bureau of Coast and Geodetic Survey.
Chicago-viite (17. p.)Philippines. Bureau of Coast and Geodetic Survey. San Guillermo, Philippines. Manila: Bureau of Coast and Geodetic Survey, 1983.
MLA-viite (9. p.)Philippines. Bureau of Coast and Geodetic Survey. San Guillermo, Philippines. Bureau of Coast and Geodetic Survey, 1983.
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