United Nations. Dept. of Economic and Social Affairs. (1955). Methods of appraisal of quality of basic data for population estimates. [s.n.].
Chicago-referens (17:e uppl.)United Nations. Dept. of Economic and Social Affairs. Methods of Appraisal of Quality of Basic Data for Population Estimates. New York: [s.n.], 1955.
MLA-referens (9:e uppl.)United Nations. Dept. of Economic and Social Affairs. Methods of Appraisal of Quality of Basic Data for Population Estimates. [s.n.], 1955.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.