Butt, J. (1968). Dickens at work. Methuen.
Chicago Style (17th ed.) ZitazioaButt, John. Dickens at Work. London: Methuen, 1968.
MLA (9th ed.) ZitazioaButt, John. Dickens at Work. Methuen, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.