APA

Swan M., Walter C., . (1993). The New Cambridge English Course. Teacher 4. New York: Cambridge University Press.

Chicago

Swan M, Walter C, . 1993. The New Cambridge English Course. Teacher 4. New York: Cambridge University Press.

Harvard

Swan M., Walter C., . (1993). The New Cambridge English Course. Teacher 4. New York: Cambridge University Press.

MLA

Swan M, Walter C, . The New Cambridge English Course. Teacher 4. New York: Cambridge University Press. 1993.