APA aipamena

Brook, G. L. (1973). Varieties of English. Macmillan.

Chicago Style aipamena

Brook, G L. Varieties of English. London: Macmillan, 1973.

MLA aipamena

Brook, G L. Varieties of English. Macmillan, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.