Cita APA (7th ed.)

Mishra, P., Ludema, R. D., & Mayda, A. M. (2010). Protection for Free?: The Political Economy of U.S. Tariff suspensions. International Monetary Fund.

Cita Chicago (17th ed.)

Mishra, Prachi, Rodney D. Ludema, i Anna Maria Mayda. Protection for Free?: The Political Economy of U.S. Tariff Suspensions. Washington, D.C.: International Monetary Fund, 2010.

Cita MLA (8th ed.)

Mishra, Prachi, et al. Protection for Free?: The Political Economy of U.S. Tariff Suspensions. International Monetary Fund, 2010.