APA (7th ed.) Citation

Ellington, H., Percival, F., & Race, P. (1993). A handbook of educational technology (3rd ed.). Kogan Page.

Chicago Style (17th ed.) Citation

Ellington, Henry, Fred Percival, and Philip Race. A Handbook of Educational Technology. 3rd ed. London: Kogan Page, 1993.

MLA (9th ed.) Citation

Ellington, Henry, et al. A Handbook of Educational Technology. 3rd ed. Kogan Page, 1993.