Krashen, S. D. (1984). Writing: Research, theroy and applications. Pergamon Institute of English.
Chicagoスタイル(17版)引用形式Krashen, Stphen D. Writing: Research, Theroy and Applications. Oxford: Pergamon Institute of English, 1984.
MLA(9版)引用形式Krashen, Stphen D. Writing: Research, Theroy and Applications. Pergamon Institute of English, 1984.
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