Irwin, J. V. (1982). Speaking effectively, Teacher's Guide. New York: Holt Rinehart and Winston.
Trích dẫn kiểu ChicagoIrwin, J. V. Speaking Effectively, Teacher's Guide. New York: Holt Rinehart and Winston, 1982.
Deismireacht MLAIrwin, J. V. Speaking Effectively, Teacher's Guide. New York: Holt Rinehart and Winston, 1982.
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