Levi, M. (1994). Study guide for Economics and the modern world. Lexington, MA: D.C. Heath.
Trích dẫn kiểu ChicagoLevi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.
MLA citiranjeLevi, Maurice. Study Guide for Economics and the Modern World. Lexington, MA: D.C. Heath, 1994.
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