James F Ragan & Lloyd B Thomas. (1990). Principles of Macroeconomics. Harcourt Brace Jovanovich.
Čikaški stil citiranjaJames F Ragan i Lloyd B Thomas. Principles of Macroeconomics. San Diego: Harcourt Brace Jovanovich, 1990.
MLA način citiranjaJames F Ragan i Lloyd B Thomas. Principles of Macroeconomics. Harcourt Brace Jovanovich, 1990.
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