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 (8th ed.) Citation

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