APA Style

Lyons, John. (1968). Introduction To Theoretical Linguistics . London: Cambridge Uniersity Press.

Chicago Style

Lyons, John. Introduction To Theoretical Linguistics. London: Cambridge Uniersity Press, 1968. Text.

MLA Style

Lyons, John. Introduction To Theoretical Linguistics. London: Cambridge Uniersity Press, 1968. Text.

Turabian Style

Lyons, John. Introduction To Theoretical Linguistics. London: Cambridge Uniersity Press, 1968. Print.