Parkin Michael. (2012). Micro Economics (10th ed.). Addison-Wesley.
Cita Chicago (17th ed.)Parkin Michael. Micro Economics. 10th ed. Boston: Addison-Wesley, 2012.
Cita MLA (9th ed.)Parkin Michael. Micro Economics. 10th ed. Addison-Wesley, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.