APA (7th ed.) Citation

Marsh, D., Hodson, A., & Marsh, D. (2008). The Guardian book of English language. Guardian Books.

Chicago Style (17th ed.) Citation

Marsh, David, Amelia Hodson, and David Marsh. The Guardian Book of English Language. London: Guardian Books, 2008.

MLA (9th ed.) Citation

Marsh, David, et al. The Guardian Book of English Language. Guardian Books, 2008.