United States. Coast and Geodetic Survey. (1997). Gazetteer of the Philippine Islands [microform]. University of the Philippines Diliman Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)United States. Coast and Geodetic Survey. Gazetteer of the Philippine Islands [microform]. Quezon City: University of the Philippines Diliman Library, 1997.
Παραπομπή σε μορφή MLA (9th εκδ.)United States. Coast and Geodetic Survey. Gazetteer of the Philippine Islands [microform]. University of the Philippines Diliman Library, 1997.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.