APA-referens (7:e uppl.)
(2010). Measuring the economically active in population censuses: A handbook. United Nations, Department of Economic and Social Affairs.
Chicago-referens (17:e uppl.)
Measuring the Economically Active in Population Censuses: A Handbook. New York: United Nations, Department of Economic and Social Affairs, 2010.
MLA-referens (9:e uppl.)
Measuring the Economically Active in Population Censuses: A Handbook. United Nations, Department of Economic and Social Affairs, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.