APA (7th ed.) Citation

King. (2005). Colloquial English: A complete English language course. Routledge.

Chicago Style (17th ed.) Citation

King. Colloquial English: A Complete English Language Course. London New York: Routledge, 2005.

MLA (8th ed.) Citation

King. Colloquial English: A Complete English Language Course. Routledge, 2005.