Cita APA

Frank, R. H. (2010). Principles of economics. 2nd ed: McGraw-Hill Education.

Chicago Style Citation

Frank, Robert H. Principles of Economics. 2nd ed: McGraw-Hill Education, 2010.

Cita MLA

Frank, Robert H. Principles of Economics. 2nd ed: McGraw-Hill Education, 2010.

Atenció: Aquestes cites poden no estar 100% correctes.