Dyfyniad APA

Guell, R. C. (2015). Issues in economics today 7 ed. McGraw-Hill.

Dyfyniad Arddull Chicago

Guell, Robert C. Issues in Economics Today 7 Ed. McGraw-Hill, 2015.

Dyfyniad MLA

Guell, Robert C. Issues in Economics Today 7 Ed. McGraw-Hill, 2015.

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