Cita APA (7th ed.)

Parkin, M., Powell, M., & Matthews, K. (2012). Economics (8th ed.). Addison-Wesley ; Pearson.

Cita Chicago (17th ed.)

Parkin, Michael, Melanie Powell, i Kent Matthews. Economics. 8th ed. Harlow, England ; Boston, MA: Addison-Wesley ; Pearson, 2012.

Cita MLA (8th ed.)

Parkin, Michael, et al. Economics. 8th ed. Addison-Wesley ; Pearson, 2012.