APA (7th ed.) Citation

Maley, A., & Duff, A. (1976). Words! Cambridge University Press.

Chicago Style (17th ed.) Citation

Maley, Alan, and Alan Duff. Words! Nueva York: Cambridge University Press, 1976.

MLA (9th ed.) Citation

Maley, Alan, and Alan Duff. Words! Cambridge University Press, 1976.