Ur, P., & Penny Ur. (1981). Discussions that work: Task-centred fluency practice. Cambridge,New York: Cambridge University Press.
シカゴスタイル引用形Ur, Penny, , Penny Ur. Discussions That Work: Task-centred Fluency Practice. Cambridge,New York: Cambridge University Press, 1981.
MLA引用形式Ur, Penny, , Penny Ur. Discussions That Work: Task-centred Fluency Practice. Cambridge,New York: Cambridge University Press, 1981.
警告: この引用は必ずしも正確ではありません.