Cita APA (7th ed.)

Gall, M. D., Borg, W. R., & Gall, J. P. (1996). Educational research: An introduction (6th ed.). Longman.

Cita Chicago (17th ed.)

Gall, Meredith D., Walter R. Borg, i Joyce P. Gall. Educational Research: An Introduction. 6th ed. New York: Longman, 1996.

Cita MLA (9th ed.)

Gall, Meredith D., et al. Educational Research: An Introduction. 6th ed. Longman, 1996.