Jack C. Richards. (1994). Changes intro class - cassette 2. Cambridge, UK: Cambridge Univ. Press.
シカゴスタイル引用形Jack C. Richards. Changes Intro Class - Cassette 2. Cambridge, UK: Cambridge Univ. Press, 1994.
MLA引用形式Jack C. Richards. Changes Intro Class - Cassette 2. Cambridge, UK: Cambridge Univ. Press, 1994.
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