Carter, R., & Numan, D. (2001). The Cambridge guide to teaching english to speakers of other languages (1a. ed.). Cambridge University.
Cita Chicago (17th ed.)Carter, Ronald, i David Numan. The Cambridge Guide to Teaching English to Speakers of Other Languages. 1a. ed. Cambridge: Cambridge University, 2001.
Cita MLA (9th ed.)Carter, Ronald, i David Numan. The Cambridge Guide to Teaching English to Speakers of Other Languages. 1a. ed. Cambridge University, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.