APA (7th ed.) Citation

Downing, A., & Locke, P. (1992). A university course in English grammar. Prentice Hall.

Chicago Style (17th ed.) Citation

Downing, Angela, and Philip Locke. A University Course in English Grammar. New York: Prentice Hall, 1992.

MLA (9th ed.) Citation

Downing, Angela, and Philip Locke. A University Course in English Grammar. Prentice Hall, 1992.

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