Philippines. Regional Development Council. (1986). Medium-term Ilocos Region development plan, 1987-1992. Regional Development Council.
Čikaški stil citiranja (17. izdanje)Philippines. Regional Development Council. Medium-term Ilocos Region Development Plan, 1987-1992. San Fernando, La Union: Regional Development Council, 1986.
MLA način citiranja (9. izdanje)Philippines. Regional Development Council. Medium-term Ilocos Region Development Plan, 1987-1992. Regional Development Council, 1986.
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