APA (7th ed.) Citation

Hudson, R. A. (1998). English grammar. Routledge.

Chicago Style (17th ed.) Citation

Hudson, Richard A. English Grammar. London ; New York: Routledge, 1998.

MLA (8th ed.) Citation

Hudson, Richard A. English Grammar. Routledge, 1998.

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