Lekachman, R. The varieties of economics: Documents, examples and manifestoes.
Lua i Stíl Chicago (17ú heag.)Lekachman, Robert. The Varieties of Economics: Documents, Examples and Manifestoes. Cleveland, World Pub. Co. [1962].
Lua MLA (9ú heag.)Lekachman, Robert. The Varieties of Economics: Documents, Examples and Manifestoes.
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