Howe, D. H. (1987). American English today!: Teacher's book. New York: Oxford University Press.
Trích dẫn kiểu ChicagoHowe, D. H. American English Today!: Teacher's Book. New York: Oxford University Press, 1987.
Deismireacht MLAHowe, D. H. American English Today!: Teacher's Book. New York: Oxford University Press, 1987.
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