APA (7th ed.) Citation

Functions of English: A course for upper-intermediate and more advanced students. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Functions of English: A Course for Upper-intermediate and More Advanced Students. Cambridge: Cambridge Univ. Press.

MLA (9th ed.) Citation

Functions of English: A Course for Upper-intermediate and More Advanced Students. Cambridge Univ. Press.

Warning: These citations may not always be 100% accurate.