Cita APA (7a ed.)

Crystal, D. (1990). Linguistics (2nd ed., repr.). Penguin Books.

Cita Chicago Style (17a ed.)

Crystal, David. Linguistics. 2nd ed., repr. London: Penguin Books, 1990.

Cita MLA (9a ed.)

Crystal, David. Linguistics. 2nd ed., repr. Penguin Books, 1990.