APA aipamena

Guell, R. C., & 1906-1998. (2011). Issues in economics today (6th ed.). Dubuque: McGraw-Hill.

Chicago Style aipamena

Guell, Robert C., và 1906-1998. Issues in Economics Today. 6th ed. Dubuque: McGraw-Hill, 2011.

MLA aipamena

Guell, Robert C., và 1906-1998. Issues in Economics Today. 6th ed. Dubuque: McGraw-Hill, 2011.

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