Cita APA (7a ed.)
Swan, M., & Walter, C. (1991). The Cambridge English Course: Student's Book 2 (12.printing.). Cambridge University Press.
Cita Chicago Style (17a ed.)
Swan, Michael, y Catherine Walter. The Cambridge English Course: Student's Book 2. 12.printing. Cambridge: Cambridge University Press, 1991.
Cita MLA (9a ed.)
Swan, Michael, y Catherine Walter. The Cambridge English Course: Student's Book 2. 12.printing. Cambridge University Press, 1991.
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