Hartley, B., & Viney, P. (1980). Streamline English: Departures : workbook A units 1 - 40 : Workbook B units 41 -80. Oxford: Oxford University Press.
Style de citation ChicagoHartley, Bernard, et Peter Viney. Streamline English: Departures : Workbook A Units 1 - 40 : Workbook B Units 41 -80. Oxford: Oxford University Press, 1980.
Style de citation MLAHartley, Bernard, et Peter Viney. Streamline English: Departures : Workbook A Units 1 - 40 : Workbook B Units 41 -80. Oxford: Oxford University Press, 1980.
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