Philippines. National Statistis Office. (1989). Philippine yearbook 1989 (10th ed.). National Statistics Office.
Chicago Style (17th ed.) CitationPhilippines. National Statistis Office. Philippine Yearbook 1989. 10th ed. Manila: National Statistics Office, 1989.
MLA (9th ed.) CitationPhilippines. National Statistis Office. Philippine Yearbook 1989. 10th ed. National Statistics Office, 1989.
Warning: These citations may not always be 100% accurate.