APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.