APA aipamena

Philippines (Republic) Industrial Development Center. (1962). Provincial economic surveys: Province of Abra. IDC.

Chicago Style aipamena

Philippines (Republic) Industrial Development Center. Provincial Economic Surveys: Province of Abra. Manila: IDC, 1962.

MLA aipamena

Philippines (Republic) Industrial Development Center. Provincial Economic Surveys: Province of Abra. IDC, 1962.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.