Cita APA (7a ed.)

Hubbard, G. P., & O'Brien, A. P. (2017). Economics (Sixth edition, Global edition.). Pearson.

Cita Chicago Style (17a ed.)

Hubbard, Glenn P., y A. P. O'Brien. Economics. Sixth edition, Global edition. Boston, [Massachusetts]: Pearson, 2017.

Cita MLA (8a ed.)

Hubbard, Glenn P., y A. P. O'Brien. Economics. Sixth edition, Global edition. Pearson, 2017.