Cita APA (7th ed.)

Borg, W. R., & Gall, M. D. (1989). Educational research: An introduction (5th edition.). Longman.

Cita Chicago (17th ed.)

Borg, Walter R., i Meredith D. Gall. Educational Research: An Introduction. 5th edition. New York, New York: Longman, 1989.

Cita MLA (9th ed.)

Borg, Walter R., i Meredith D. Gall. Educational Research: An Introduction. 5th edition. Longman, 1989.