Watkins, F. C. (1982). Practical English handbook. Boston: Houghton Mifflin.
Trích dẫn kiểu ChicagoWatkins, Floyd C. Practical English Handbook. Boston: Houghton Mifflin, 1982.
MLA citiranjeWatkins, Floyd C. Practical English Handbook. Boston: Houghton Mifflin, 1982.
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