Richards, J. C. (2001). Passages: An upper - level multi- skills course : With answers. Student's book and workbook 1 Volume 1 = Tiếng Anh trong giao tiếp quốc tế. Nxb Trẻ.
シカゴスタイル引用形Richards, Jack C. Passages: An Upper - Level Multi- Skills Course : With Answers. Student's Book and Workbook 1 Volume 1 = Tiếng Anh Trong Giao Tiếp Quốc Tế. Nxb Trẻ, 2001.
MLA引用形式Richards, Jack C. Passages: An Upper - Level Multi- Skills Course : With Answers. Student's Book and Workbook 1 Volume 1 = Tiếng Anh Trong Giao Tiếp Quốc Tế. Nxb Trẻ, 2001.
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