Cita APA (7a ed.)

Hewings M. Martin. (2010). Cambridge Grammar for CAE and Proficiency with answers: Self-study grammar reference and practice (3rd ed.). Cambridge, Cambridge University Press, 2010.

Cita Chicago Style (17a ed.)

Hewings M. Martin. Cambridge Grammar for CAE and Proficiency with Answers: Self-study Grammar Reference and Practice. 3rd ed. Cambridge, Cambridge University Press, 2010, 2010.

Cita MLA (9a ed.)

Hewings M. Martin. Cambridge Grammar for CAE and Proficiency with Answers: Self-study Grammar Reference and Practice. 3rd ed. Cambridge, Cambridge University Press, 2010, 2010.