Cita APA (7th ed.)

O´Kean, J. M. (2013). Econom{acute}ia. McGraw-Hill Espa{tilde}na.

Cita Chicago (17th ed.)

O´Kean, Jos{acute}e Mar{acute}ia. Econom{acute}ia. Madrid: McGraw-Hill Espa{tilde}na, 2013.

Cita MLA (9th ed.)

O´Kean, Jos{acute}e Mar{acute}ia. Econom{acute}ia. McGraw-Hill Espa{tilde}na, 2013.