APA (7th ed.) Citation

DOWNING, A., & LOCKE, P. (2002). A university course in English grammar. Routledge.

Chicago Style (17th ed.) Citation

DOWNING, Angela, and Philip LOCKE. A University Course in English Grammar. London: Routledge, 2002.

MLA (9th ed.) Citation

DOWNING, Angela, and Philip LOCKE. A University Course in English Grammar. Routledge, 2002.