Cita APA (7a ed.)

Abrego, L., Riezman, R. G., & Whalley, J. (2001). How often are propositions on the effects of customs unions theoretical curiosa and when should they guide policy? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Abrego, Lisandro, Raymond Glenn Riezman, y John Whalley. How Often Are Propositions on the Effects of Customs Unions Theoretical Curiosa and When Should They Guide Policy? Cambridge, MA: National Bureau of Economic Research, 2001.

Cita MLA (9a ed.)

Abrego, Lisandro, et al. How Often Are Propositions on the Effects of Customs Unions Theoretical Curiosa and When Should They Guide Policy? National Bureau of Economic Research, 2001.