Philippines. Regional Development Council (Region I). (1978). Five-year Ilocos Region development plan: 1978-1982: executive summary. RDC I.
Citazione stile Chigago Style (17a edizione)Philippines. Regional Development Council (Region I). Five-year Ilocos Region Development Plan: 1978-1982: Executive Summary. San Fernando, La Union: RDC I, 1978.
Citatione MLA (9a ed.)Philippines. Regional Development Council (Region I). Five-year Ilocos Region Development Plan: 1978-1982: Executive Summary. RDC I, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.