Tran, X. D. (2009). US Culture thru Speaking: Teachers' help. H: University of Education Publishing house.
Trích dẫn kiểu ChicagoTran, Xuan Diep. US Culture Thru Speaking: Teachers' Help. H: University of Education Publishing house, 2009.
Deismireacht MLATran, Xuan Diep. US Culture Thru Speaking: Teachers' Help. H: University of Education Publishing house, 2009.
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