Hartmann, P. (2000). Quest: Listening and Speaking in the Academic Work-Book 1 (Có sách). Boston: Mc GrawHill.
Chicago-stil citatHartmann, Pamela. Quest: Listening and Speaking in the Academic Work-Book 1 (Có Sách). Boston: Mc GrawHill, 2000.
MLA-referensHartmann, Pamela. Quest: Listening and Speaking in the Academic Work-Book 1 (Có Sách). Boston: Mc GrawHill, 2000.
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