Citazione Stile APA (7a Edizione)

Philippines. National Statistics Office. (1990). 1990 census of population and housing: Population by city, municipality, and barangay. NSO.

Citazione stile Chigago Style (17a edizione)

Philippines. National Statistics Office. 1990 Census of Population and Housing: Population by City, Municipality, and Barangay. Manila: NSO, 1990.

Citatione MLA (9a ed.)

Philippines. National Statistics Office. 1990 Census of Population and Housing: Population by City, Municipality, and Barangay. NSO, 1990.