APA (7th ed.) Citation

Alesina, A., Barro, R. J., & Tenreyro, S. (2002). Optimal currency areas. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Alesina, Alberto, Robert J. Barro, and Silvana Tenreyro. Optimal Currency Areas. Cambridge, MA: National Bureau of Economic Research, 2002.

MLA (9th ed.) Citation

Alesina, Alberto, et al. Optimal Currency Areas. National Bureau of Economic Research, 2002.