Cita APA (7a ed.)

Harrison, M. (2012). Cambridge English: Proficiency practice tests : with key : five tests for Cambridge English : proficiency: Mark Harrison. Oxford University Press.

Cita Chicago Style (17a ed.)

Harrison, Mark. Cambridge English: Proficiency Practice Tests : With Key : Five Tests for Cambridge English : Proficiency: Mark Harrison. Oxford: Oxford University Press, 2012.

Cita MLA (8a ed.)

Harrison, Mark. Cambridge English: Proficiency Practice Tests : With Key : Five Tests for Cambridge English : Proficiency: Mark Harrison. Oxford University Press, 2012.