APA aipamena

Peter Siemund. (2013). Varieties of English (1.). Cambridge University Press.

Chicago Style aipamena

Peter Siemund. Varieties of English. 1. Cambridge University Press, 2013.

MLA aipamena

Peter Siemund. Varieties of English. 1. Cambridge University Press, 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.