Harvey, J. (1993). Modern economics: An introduction for business and professional students (6th ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Harvey, Jack. Modern Economics: An Introduction for Business and Professional Students. 6th ed. London: Macmillan, 1993.
Lua MLA (9ú heag.)Harvey, Jack. Modern Economics: An Introduction for Business and Professional Students. 6th ed. Macmillan, 1993.
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