APA aipamena

Ur, P. (1981). Discussion that work: Task-centred fluency practice. Cambridge: Cambridge University.

Chicago Style aipamena

Ur, Penny. Discussion That Work: Task-centred Fluency Practice. Cambridge: Cambridge University, 1981.

MLA aipamena

Ur, Penny. Discussion That Work: Task-centred Fluency Practice. Cambridge: Cambridge University, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.