Cita APA (7th ed.)

Trask,R.L. (2001). Penguin Guide To Common Errors In English (NA.). Penguin Books.

Cita Chicago (17th ed.)

Trask,R.L. Penguin Guide To Common Errors In English. NA. New Delhi: Penguin Books, 2001.

Cita MLA (9th ed.)

Trask,R.L. Penguin Guide To Common Errors In English. NA. Penguin Books, 2001.