American Academy of Political and Social Science & Preston, S. H. (1990). World population: Approaching the year 2000. Sage.
Citazione stile Chigago Style (17a edizione)American Academy of Political and Social Science e Samuel H. Preston. World Population: Approaching the Year 2000. Newbury Park, California: Sage, 1990.
Citatione MLA (9a ed.)American Academy of Political and Social Science e Samuel H. Preston. World Population: Approaching the Year 2000. Sage, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.