Ur, P. (1981). Discussions that work: Task-centred fluency practice. Cambridge University Press.
Chicago Style (17th ed.) CitationUr, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge ; New York: Cambridge University Press, 1981.
MLA引文Ur, Penny. Discussions That Work: Task-centred Fluency Practice. Cambridge University Press, 1981.
警告:這些引文格式不一定是100%准確.