Hartley, B., & Viney, P. Streanline english. Departures: An intensive english course for beginners student´s edition.
Citazione stile Chigago Style (17a edizione)Hartley, Bernard, e Peter Viney. Streanline English. Departures: An Intensive English Course for Beginners Student´s Edition.
Citatione MLA (8a ed.)Hartley, Bernard, e Peter Viney. Streanline English. Departures: An Intensive English Course for Beginners Student´s Edition.
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