APA (7th ed.) Citation

Lewis, C. S. (1967). Studies in words (2nd ed.). University Press.

Chicago Style (17th ed.) Citation

Lewis, Clive Staples. Studies in Words. 2nd ed. Cambridge, Eng: University Press, 1967.

MLA (9th ed.) Citation

Lewis, Clive Staples. Studies in Words. 2nd ed. University Press, 1967.