Cita APA (7th ed.)

Abrego, L., Reizman, R., & 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 (17th ed.)

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

Cita MLA (9th 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.