Kuper, A., & Kuper, J. (1989). The Social science encyclopedia (Rev. and repr.). Routledge.

Kuper, Adam, and Jessica Kuper. The Social Science Encyclopedia. Rev. and repr. London ; New York: Routledge, 1989.

Kuper, Adam, and Jessica Kuper. The Social Science Encyclopedia. Rev. and repr. Routledge, 1989.