Philippines. Office of the Governor. (1970). Annual report: Kalinga-Apayao province.
Čikaški stil citiranja (17. izdanje)Philippines. Office of the Governor. Annual Report: Kalinga-Apayao Province. 1970.
MLA način citiranja (9. izdanje)Philippines. Office of the Governor. Annual Report: Kalinga-Apayao Province. 1970.
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