Theen, R. H., & Wilson, F. L. (1995). Comparative politics: An introduction to seven countries (3rd.ed.). Prentice Hall.

Theen, Rolf H.W, and Frank L. Wilson. Comparative Politics: An Introduction to Seven Countries. 3rd.ed. New Jersey: Prentice Hall, 1995.

Theen, Rolf H.W, and Frank L. Wilson. Comparative Politics: An Introduction to Seven Countries. 3rd.ed. Prentice Hall, 1995.