Swan M. Michael & Walter C. Catherine. (1993). The New Cambridge English Course. Teacher 4: Upper-intermediate. New York, Cambridge University Press, 1993.
Čikaški stil citiranja (17. izdanje)Swan M. Michael i Walter C. Catherine. The New Cambridge English Course. Teacher 4: Upper-intermediate. New York, Cambridge University Press, 1993, 1993.
MLA način citiranja (9. izdanje)Swan M. Michael i Walter C. Catherine. The New Cambridge English Course. Teacher 4: Upper-intermediate. New York, Cambridge University Press, 1993, 1993.
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