Ur, P. (1981). Discussión that Work: Task - Centred fluency practice. (1a. ed.). Estados Unidos: Cambridge, University press.
Chicago Style CitationUr, Penny. Discussión That Work: Task - Centred Fluency Practice. 1a. ed. Estados Unidos: Cambridge, University press, 1981.
MLA CitationUr, Penny. Discussión That Work: Task - Centred Fluency Practice. 1a. ed. Estados Unidos: Cambridge, University press, 1981.
Warning: These citations may not always be 100% accurate.