Cita APA (7th ed.)

Parkin, M. (2014). Economics (11th ed.). Pearson.

Cita Chicago (17th ed.)

Parkin, Michael. Economics. 11th ed. Boston: Pearson, 2014.

Cita MLA (8th ed.)

Parkin, Michael. Economics. 11th ed. Pearson, 2014.

Atenció: Aquestes cites poden no estar 100% correctes.