APA
"United Nations E. C. F. E. A. S. C., "United Nations E. C. F. E. A. S. C., . (1980). International comparison to gross domestic product in Europe. New: York United Nations USA.
Chicago
"United Nations Economic Commission For Europe And Statistical Commission", "United Nations Economic Commission For Europe And Statistical Commission", . 1980. International comparison to gross domestic product in Europe. New: York United Nations USA.
Harvard
"United Nations E. C. F. E. A. S. C., "United Nations E. C. F. E. A. S. C., . (1980). International comparison to gross domestic product in Europe. New: York United Nations USA.
MLA
"United Nations Economic Commission For Europe And Statistical Commission", "United Nations Economic Commission For Europe And Statistical Commission", . International comparison to gross domestic product in Europe. New: York United Nations USA. 1980.
