Cita APA (7th ed.)

Klein, M., & Harford, T. (2005). The market for aid. International Finance Corporation.

Cita Chicago (17th ed.)

Klein, Michael, i Tim Harford. The Market for Aid. Washington, D.C.: International Finance Corporation, 2005.

Cita MLA (8th ed.)

Klein, Michael, i Tim Harford. The Market for Aid. International Finance Corporation, 2005.