Pham, T. X. T., & Phan, V. H. (2011). An investigation into refusal strategies to requests by American speakers of English and Vietnamese learners of English. Đà Nẵng: The University of Da Nang.
Dyfyniad Arddull ChicagoPham, Thi Xuan Thao., và Văn Hoà Phan. An Investigation Into Refusal Strategies to Requests By American Speakers of English and Vietnamese Learners of English. Đà Nẵng: The University of Da Nang, 2011.
Dyfyniad MLAPham, Thi Xuan Thao., và Văn Hoà Phan. An Investigation Into Refusal Strategies to Requests By American Speakers of English and Vietnamese Learners of English. Đà Nẵng: The University of Da Nang, 2011.
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