Dyfyniad APA

Hartley, B., & Viney, P. (1980). Streamline English: Departures : workbook A units 1 - 40 : Workbook B units 41 -80. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Hartley, Bernard, và Peter Viney. Streamline English: Departures : Workbook A Units 1 - 40 : Workbook B Units 41 -80. Oxford: Oxford University Press, 1980.

Dyfyniad MLA

Hartley, Bernard, và Peter Viney. Streamline English: Departures : Workbook A Units 1 - 40 : Workbook B Units 41 -80. Oxford: Oxford University Press, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.