Pbilippines. Bureau of Coast and Geodetic Survey. (1983). Sta. Marcela, Philippines. Bureau of Coast and Geodetic Survey.
Dyfyniad Arddull ChicagoPbilippines. Bureau of Coast and Geodetic Survey. Sta. Marcela, Philippines. Manila: Bureau of Coast and Geodetic Survey, 1983.
Dyfyniad MLAPbilippines. Bureau of Coast and Geodetic Survey. Sta. Marcela, Philippines. Bureau of Coast and Geodetic Survey, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.