Cita APA (7a ed.)

Lyons, J. (1969). Introduction to theoretical linguistics. Univesrity Press.

Cita Chicago Style (17a ed.)

Lyons, John. Introduction to Theoretical Linguistics. Cambridge: Univesrity Press, 1969.

Cita MLA (8a ed.)

Lyons, John. Introduction to Theoretical Linguistics. Univesrity Press, 1969.