Gaya APA

Hartley, B., Viney, P. (1981). Streamline English Departures Workbook A: Units 1-40 (-). oxford: Oxford University Press.

Gaya MLA

Hartley, Bernard., Viney, Peter. "Streamline English Departures Workbook A: Units 1-40". - oxford: Oxford University Press, 1981. Text.