Citazione APA

Adrian Doff, & Adrian Doff; Johanna Stirling; Sarah Ackroyd. (2011). English unlimited. C1, Advanced teachers pack. Cambridge: Cambridge University Press.

Stile di citazione Chicago

Adrian Doff, e Adrian Doff; Johanna Stirling; Sarah Ackroyd. English Unlimited. C1, Advanced Teachers Pack. Cambridge: Cambridge University Press, 2011.

Citazione MLA

Adrian Doff, e Adrian Doff; Johanna Stirling; Sarah Ackroyd. English Unlimited. C1, Advanced Teachers Pack. Cambridge: Cambridge University Press, 2011.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.