Deismireacht APA

Frank, R. H. (2001). Principles of economics. McGraw-Hill/Irwin.

Trích dẫn kiểu Chicago

Frank, Robert H. Principles of Economics. McGraw-Hill/Irwin, 2001.

Deismireacht MLA

Frank, Robert H. Principles of Economics. McGraw-Hill/Irwin, 2001.

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