Cita APA (7a ed.)

Gregory, J. B., Wicks, J. M., & Martin, O. (1979). Effective social studies (New, 3. [Aufl.].).

Cita Chicago Style (17a ed.)

Gregory, J. B., J. M. Wicks, y Owen Martin. Effective Social Studies. New, 3. [Aufl.]. 1979.

Cita MLA (9a ed.)

Gregory, J. B., et al. Effective Social Studies. New, 3. [Aufl.]. 1979.