APA
"United Nations E. a. S. A. (. o., "United Nations E. a. S. A. (. o., . (1977). International directory of organizations concerned. New: York U N USA.
Chicago
"United Nations Economics and Social Affairs (Deptt of-)", "United Nations Economics and Social Affairs (Deptt of-)", . 1977. International directory of organizations concerned. New: York U N USA.
Harvard
"United Nations E. a. S. A. (. o., "United Nations E. a. S. A. (. o., . (1977). International directory of organizations concerned. New: York U N USA.
MLA
"United Nations Economics and Social Affairs (Deptt of-)", "United Nations Economics and Social Affairs (Deptt of-)", . International directory of organizations concerned. New: York U N USA. 1977.
