Citazione Stile APA (7a Edizione)

Keen, M., Ivanova, A., & Klemm, A. (2005). The Russian Flat Tax Reform. International Monetary Fund.

Citazione stile Chigago Style (17a edizione)

Keen, Michael, Anna Ivanova, e Alexander Klemm. The Russian Flat Tax Reform. Washington, D.C.: International Monetary Fund, 2005.

Citatione MLA (8a ed.)

Keen, Michael, et al. The Russian Flat Tax Reform. International Monetary Fund, 2005.