Cita APA (7th ed.)

Brophy, J. E., Alleman, J., & Halvorsen, A. (2018). Powerful social studies for elementary students (Fourth edition, student edition.). Cengage Learning.

Cita Chicago (17th ed.)

Brophy, Jere E., Janet Alleman, i Anne-Lise Halvorsen. Powerful Social Studies for Elementary Students. Fourth edition, student edition. Boston, MA: Cengage Learning, 2018.

Cita MLA (9th ed.)

Brophy, Jere E., et al. Powerful Social Studies for Elementary Students. Fourth edition, student edition. Cengage Learning, 2018.