Roll, E. (1956). A history of economic thought (3rd ed.). Prentice-Hall.
Chicago-čujuhus (17. p.)Roll, Erich. A History of Economic Thought. 3rd ed. Englewood Cliffs: Prentice-Hall, 1956.
MLA-čujuhus (9. p.)Roll, Erich. A History of Economic Thought. 3rd ed. Prentice-Hall, 1956.
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