APA
"United Nations E. C. F. E., "United Nations E. C. F. E., . (1980). "Role and place of engineering industries in national and world Economics up-dating to, 1970-1975 of the Analytical Part". New: York United Nations U S A.
Chicago
"United Nations Economic Commission For Eurpoe", "United Nations Economic Commission For Eurpoe", . 1980. "Role and place of engineering industries in national and world Economics up-dating to, 1970-1975 of the Analytical Part". New: York United Nations U S A.
Harvard
"United Nations E. C. F. E., "United Nations E. C. F. E., . (1980). "Role and place of engineering industries in national and world Economics up-dating to, 1970-1975 of the Analytical Part". New: York United Nations U S A.
MLA
"United Nations Economic Commission For Eurpoe", "United Nations Economic Commission For Eurpoe", . "Role and place of engineering industries in national and world Economics up-dating to, 1970-1975 of the Analytical Part". New: York United Nations U S A. 1980.
