APA
"UN E. a. s. a. (. o., "UN E. a. s. a. (. o., . (1977). Economic and social progress in the second develop. : .
Chicago
"UN Economic and social affairs (Deptt of-)", "UN Economic and social affairs (Deptt of-)", . 1977. Economic and social progress in the second develop. : .
Harvard
"UN E. a. s. a. (. o., "UN E. a. s. a. (. o., . (1977). Economic and social progress in the second develop. : .
MLA
"UN Economic and social affairs (Deptt of-)", "UN Economic and social affairs (Deptt of-)", . Economic and social progress in the second develop. : . 1977.
