Cita APA

Gall, M. D., Gall, J. P., & Borg, W. R. (2002). Educational research: An introduction Pearson Education.

Citación estilo Chicago

Gall, Meredith D., Joyce P. Gall, and Walter R. Borg. Educational Research: An Introduction. 7th ed. Boston: Pearson Education, 2002.

Cita MLA

Gall, Meredith D., Joyce P. Gall, and Walter R. Borg. Educational Research: An Introduction. 7th ed. Boston: Pearson Education, 2002.