Wallace, R. A., & Wolf, A. (1995). Contemporary sociological theory: Continuing the classical tradition (4th ed.). Prentice-Hall.

Wallace, Ruth A., and Alison Wolf. Contemporary Sociological Theory: Continuing the Classical Tradition. 4th ed. Englewood Cliffs, N.J.: Prentice-Hall, 1995.

Wallace, Ruth A., and Alison Wolf. Contemporary Sociological Theory: Continuing the Classical Tradition. 4th ed. Prentice-Hall, 1995.