Kearl, J. (1993). Principles of Economics. D.C.Heath and Co..
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Chicago Style (17th ed.) Citation
Kearl, James. Principles of Economics. Massachusetts: D.C.Heath and Co., 1993.
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MLA引文
Kearl, James. Principles of Economics. D.C.Heath and Co., 1993.
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警告：這些引文格式不一定是100％准確.