Cita APA (7a ed.)

Hubbard, R. G., & O'Brien, A. P. (2015). Essentials of economics (Fourth edition, Global edition.). Pearson.

Cita Chicago Style (17a ed.)

Hubbard, R. Glenn, y Anthony Patrick O'Brien. Essentials of Economics. Fourth edition, Global edition. Harlow, England: Pearson, 2015.

Cita MLA (8a ed.)

Hubbard, R. Glenn, y Anthony Patrick O'Brien. Essentials of Economics. Fourth edition, Global edition. Pearson, 2015.