Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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