Oxenfeldt, A. R. (1953). Economic systems in action: The United States, the Soviet Union, and the United Kingdom. Rinehart.
Lua i Stíl Chicago (17ú heag.)Oxenfeldt, Alfred Richard. Economic Systems in Action: The United States, the Soviet Union, and the United Kingdom. New York: Rinehart, 1953.
Lua MLA (9ú heag.)Oxenfeldt, Alfred Richard. Economic Systems in Action: The United States, the Soviet Union, and the United Kingdom. Rinehart, 1953.
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