Hewings M. Martin. (2011). Cambridge Grammar for CAE and Proficiency with answers: Self-study grammar reference and practice (4rd ed.). Cambridge, Cambridge University Press, 2011.
Chicago Style (17th ed.) CitationHewings M. Martin. Cambridge Grammar for CAE and Proficiency with Answers: Self-study Grammar Reference and Practice. 4rd ed. Cambridge, Cambridge University Press, 2011, 2011.
MLA (9th ed.) CitationHewings M. Martin. Cambridge Grammar for CAE and Proficiency with Answers: Self-study Grammar Reference and Practice. 4rd ed. Cambridge, Cambridge University Press, 2011, 2011.
Warning: These citations may not always be 100% accurate.