Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

Doff, Adrian, 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%.