Osborne. (2013). Reasonably Simple Economics (1.). Apress.
Cita Chicago (17th ed.)Osborne. Reasonably Simple Economics. 1. Apress, 2013.
Cita MLA (8th ed.)Osborne. Reasonably Simple Economics. 1. Apress, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.