Collis, H. (2000). 101 American Customs: Understanding American language and culture through common practices. Illinois: Passport Books.
Trích dẫn kiểu ChicagoCollis, Harry. 101 American Customs: Understanding American Language and Culture Through Common Practices. Illinois: Passport Books, 2000.
Trích dẫn MLACollis, Harry. 101 American Customs: Understanding American Language and Culture Through Common Practices. Illinois: Passport Books, 2000.
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