David Crystal. (2000). The Cambridge encyclopedia of English language. Cambridge, UK: Cambridge Univ. Press.
Chicago Style aipamenaDavid Crystal. The Cambridge Encyclopedia of English Language. Cambridge, UK: Cambridge Univ. Press, 2000.
MLA aipamenaDavid Crystal. The Cambridge Encyclopedia of English Language. Cambridge, UK: Cambridge Univ. Press, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.