APA
"United Nations E. a. S. A. (. o., "United Nations E. a. S. A. (. o., . (1977). Improvement of social welfare training. New: York UN.
Chicago
"United Nations Economic and Social Affairs (Deptt of-)", "United Nations Economic and Social Affairs (Deptt of-)", . 1977. Improvement of social welfare training. New: York UN.
Harvard
"United Nations E. a. S. A. (. o., "United Nations E. a. S. A. (. o., . (1977). Improvement of social welfare training. New: York UN.
MLA
"United Nations Economic and Social Affairs (Deptt of-)", "United Nations Economic and Social Affairs (Deptt of-)", . Improvement of social welfare training. New: York UN. 1977.
