Ilocos Norte provincial profile. National Statistics Office.
Lua i Stíl Chicago (17ú heag.)Ilocos Norte Provincial Profile. Quezon City: National Statistics Office.
Lua MLA (9ú heag.)Ilocos Norte Provincial Profile. National Statistics Office.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.