Philippines. National Mapping and Resource Information Authority. (1990). Region I (Ed.1, November, 1989.). National Mapping and Resource Information Authority.
Lua i Stíl Chicago (17ú heag.)Philippines. National Mapping and Resource Information Authority. Region I. Ed.1, November, 1989. Makati City: National Mapping and Resource Information Authority, 1990.
Lua MLA (9ú heag.)Philippines. National Mapping and Resource Information Authority. Region I. Ed.1, November, 1989. National Mapping and Resource Information Authority, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.