Gaya APA

bongaarts, J., bulatao, R, A. (2000). Beyond Six Billion : Forecasting The World's Population / Panel on Population Projections, Communittee on Population, Commission on Behavioral and Social Sciences and Education . America: National Research Council.

Gaya MLA

bongaarts, John., bulatao, Rodolfo, A. "Beyond Six Billion : Forecasting The World's Population / Panel on Population Projections, Communittee on Population, Commission on Behavioral and Social Sciences and Education". America: National Research Council, 2000. Text.