APA-referens

Duckworth, M. (2008). Countdown to first certificate: (Workbook CD). Oxford: Oxford University Press.

Chicago-stil citat

Duckworth, Michael. Countdown to First Certificate: (Workbook CD). Oxford: Oxford University Press, 2008.

MLA-referens

Duckworth, Michael. Countdown to First Certificate: (Workbook CD). Oxford: Oxford University Press, 2008.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.