APA (7th ed.) Citation

Ashenfelter, O. C., & Card, D. (1986). Why have unemployment rates in Canada and the United States diverged? The London School of Economics and Political Science.

Chicago Style (17th ed.) Citation

Ashenfelter, Orley C., and David Card. Why Have Unemployment Rates in Canada and the United States Diverged? London: The London School of Economics and Political Science, 1986.

MLA (9th ed.) Citation

Ashenfelter, Orley C., and David Card. Why Have Unemployment Rates in Canada and the United States Diverged? The London School of Economics and Political Science, 1986.

Warning: These citations may not always be 100% accurate.