Cita APA (7th ed.)

Hartley, B., & Viney, P. Streanline english. Departures: An intensive english course for beginners student´s edition.

Cita Chicago (17th ed.)

Hartley, Bernard, i Peter Viney. Streanline English. Departures: An Intensive English Course for Beginners Student´s Edition.

Cita MLA (8th ed.)

Hartley, Bernard, i Peter Viney. Streanline English. Departures: An Intensive English Course for Beginners Student´s Edition.