APA (7th ed.) Citation

Gloria Cunanan Maphouse. (1989). Map of Abra province (1981 ed.). Gloria Cunanan Maphouse.

Chicago Style (17th ed.) Citation

Gloria Cunanan Maphouse. Map of Abra Province. 1981 ed. Makati, Metro Manila: Gloria Cunanan Maphouse, 1989.

MLA (9th ed.) Citation

Gloria Cunanan Maphouse. Map of Abra Province. 1981 ed. Gloria Cunanan Maphouse, 1989.

Warning: These citations may not always be 100% accurate.