Colm, G. (1952). The American economy in 1960: Economic progress in a world of tension. National Planning Association].
Chicago-viite (17. p.)Colm, Gerhard. The American Economy in 1960: Economic Progress in a World of Tension. [Washington: National Planning Association], 1952.
MLA-viite (9. p.)Colm, Gerhard. The American Economy in 1960: Economic Progress in a World of Tension. National Planning Association], 1952.
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