APA (7th ed.) Zitazioa

BALL, W. (1958). A practical guide to colloquial idiom. Longman.

Chicago Style (17th ed.) Zitazioa

BALL, W.J. A Practical Guide to Colloquial Idiom. London: Longman, 1958.

MLA (9th ed.) Zitazioa

BALL, W.J. A Practical Guide to Colloquial Idiom. Longman, 1958.