UN. (1988). World Demographic Estimates And Projections, 1950-2025: :Total Population, School-Age Population, Economically Active Population (1. Edisyon.). UN.DIESA.
Chicago Style (17th ed.) CitationUN. World Demographic Estimates And Projections, 1950-2025: :Total Population, School-Age Population, Economically Active Population. 1. Edisyon. New York: UN.DIESA, 1988.
MLA (9th ed.) CitationUN. World Demographic Estimates And Projections, 1950-2025: :Total Population, School-Age Population, Economically Active Population. 1. Edisyon. UN.DIESA, 1988.
Warning: These citations may not always be 100% accurate.