Department of Economic and Social Affairs & Département des Affaires Economiques et Sociales. (2001). 1999 Demographic yearbook. United Nations.
Citazione stile Chigago Style (17a edizione)Department of Economic and Social Affairs e Département des Affaires Economiques et Sociales. 1999 Demographic Yearbook. Nueva York: United Nations, 2001.
Citatione MLA (9a ed.)Department of Economic and Social Affairs e Département des Affaires Economiques et Sociales. 1999 Demographic Yearbook. United Nations, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.