Cita APA (7a ed.)

Gloria Cunanan Maphouse. (1989). Map of Northern Samar (1989 ed.). Gloria Cunanan Maphouse.

Cita Chicago Style (17a ed.)

Gloria Cunanan Maphouse. Map of Northern Samar. 1989 ed. Makati, Metro Manila: Gloria Cunanan Maphouse, 1989.

Cita MLA (9a ed.)

Gloria Cunanan Maphouse. Map of Northern Samar. 1989 ed. Gloria Cunanan Maphouse, 1989.