APA (7th ed.) Citation

Hatton, T. J., & Williamson, J. G. (1992). What drove the mass migrations from Europe in the late nineteenth century?

Chicago Style (17th ed.) Citation

Hatton, Timothy J., and Jeffrey G. Williamson. What Drove the Mass Migrations from Europe in the Late Nineteenth Century? Cambridge, MA, 1992.

MLA (9th ed.) Citation

Hatton, Timothy J., and Jeffrey G. Williamson. What Drove the Mass Migrations from Europe in the Late Nineteenth Century? 1992.