Hornby, A. (1967). Oxford progressive english alternative: Course: Book D. Oxford University Pr.
Chicagoスタイル(17版)引用形式Hornby, A.S. Oxford Progressive English Alternative: Course: Book D. Oxford: Oxford University Pr, 1967.
MLA(9版)引用形式Hornby, A.S. Oxford Progressive English Alternative: Course: Book D. Oxford University Pr, 1967.
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