Cita APA (7a ed.)

(1989). Corregidor Island, Philippines (1-DMS ed.). National Mapping and Resource Information Authority.

Cita Chicago Style (17a ed.)

Corregidor Island, Philippines. 1-DMS ed. Metro Manila: National Mapping and Resource Information Authority, 1989.

Cita MLA (9a ed.)

Corregidor Island, Philippines. 1-DMS ed. National Mapping and Resource Information Authority, 1989.