APA (7th ed.) Citation

Hatton, T. J., & Williamson, J. G. (2001). Demographic and economic pressure on emigration out of Africa. Forschungsinst. zur Zukunft der Arbeit.

Chicago Style (17th ed.) Citation

Hatton, Timothy J., and Jeffrey G. Williamson. Demographic and Economic Pressure on Emigration Out of Africa. Bonn: Forschungsinst. zur Zukunft der Arbeit, 2001.

MLA (9th ed.) Citation

Hatton, Timothy J., and Jeffrey G. Williamson. Demographic and Economic Pressure on Emigration Out of Africa. Forschungsinst. zur Zukunft der Arbeit, 2001.