Cleto, R. B., Dehn, C. H., & Padilla, H. J. (1986). The Ilocos and Cordillera provinces: A general physical and socio-economic profile. Katinnulong Daguiti Umili Iti Amianan, Inc. (KADUAMI) Sibol ng Agham at Akmang Teknolohiya (SIBAT), National Secretariat.
Chicago Style (17th ed.) CitationCleto, Romeo B., Christoph H. Dehn, and Hilario J. Padilla. The Ilocos and Cordillera Provinces: A General Physical and Socio-economic Profile. Baguio City [Philippines], Manila: Katinnulong Daguiti Umili Iti Amianan, Inc. (KADUAMI) Sibol ng Agham at Akmang Teknolohiya (SIBAT), National Secretariat, 1986.
MLA (9th ed.) CitationCleto, Romeo B., et al. The Ilocos and Cordillera Provinces: A General Physical and Socio-economic Profile. Katinnulong Daguiti Umili Iti Amianan, Inc. (KADUAMI) Sibol ng Agham at Akmang Teknolohiya (SIBAT), National Secretariat, 1986.