APA (7th ed.) Citation

Congdon, P., & Stillwell, J. (1991). Migration models: Macro and micro approaches. Belhaven Press.

Chicago Style (17th ed.) Citation

Congdon, P., and John Stillwell. Migration Models: Macro and Micro Approaches. London ; New York: Belhaven Press, 1991.

MLA (9th ed.) Citation

Congdon, P., and John Stillwell. Migration Models: Macro and Micro Approaches. Belhaven Press, 1991.