Cita APA (7a ed.)
Swan, M., & Walter, C. (1993). The Cambridge English Course: Practice Book 3 (7.printing.).
Cita Chicago Style (17a ed.)
Swan, Michael, y Catherine Walter. The Cambridge English Course: Practice Book 3. 7.printing. Cambridge Cambridge University Press, 1993.
Cita MLA (9a ed.)
Swan, Michael, y Catherine Walter. The Cambridge English Course: Practice Book 3. 7.printing. 1993.
Precaución: Estas citas no son 100% exactas.