Swan, M., & Smith, B. (2001). Learner English: A teacher's guide to interference and other problems (2nd ed.). Cambridge ; New York: Cambridge University Press.
Stile di citazione ChicagoSwan, Michael., e Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2nd ed. Cambridge ; New York: Cambridge University Press, 2001.
Citazione MLASwan, Michael., e Bernard Smith. Learner English: A Teacher's Guide to Interference and Other Problems. 2nd ed. Cambridge ; New York: Cambridge University Press, 2001.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.