Hartley, B. (1995). New American streamline: Departures : An intensive American English series for beginners. New York: Oxford University Press.
Παραπομπή Chicago StyleHartley, Bernard. New American Streamline: Departures : An Intensive American English Series for Beginners. New York: Oxford University Press, 1995.
Παραπομπή MLAHartley, Bernard. New American Streamline: Departures : An Intensive American English Series for Beginners. New York: Oxford University Press, 1995.
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