APA (7th ed.) Citation

Philippines. National Census and Statistics Office. (1981). 1980 census of population: Preliminary report. NCSO.

Chicago Style (17th ed.) Citation

Philippines. National Census and Statistics Office. 1980 Census of Population: Preliminary Report. Manila: NCSO, 1981.

MLA (9th ed.) Citation

Philippines. National Census and Statistics Office. 1980 Census of Population: Preliminary Report. NCSO, 1981.

Warning: These citations may not always be 100% accurate.