Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.