Cita APA

Savage, T. V., & Armstrong, D. G. (2008). Effective teaching in elementary social studies (6th ed.). Pearson/Merrill Prentice Hall.

Citación estilo Chicago

Savage, Tom V., and David G. Armstrong. Effective Teaching in Elementary Social Studies. 6th ed. Upper Saddle River, N.J: Pearson/Merrill Prentice Hall, 2008.

Cita MLA

Savage, Tom V., and David G. Armstrong. Effective Teaching in Elementary Social Studies. 6th ed. Pearson/Merrill Prentice Hall, 2008.