Lambert, W. W., & Lambert, W. E. (1973). Social Psychology (2a. ed.). Prentice-Hall.

Lambert, William W., and Wallace E. Lambert. Social Psychology. 2a. ed. Englewood Cliffs: Prentice-Hall, 1973.

Lambert, William W., and Wallace E. Lambert. Social Psychology. 2a. ed. Prentice-Hall, 1973.