APA Citation

Downing, & Locke. (2006). A University course in English grammar (2nd ed.). New York: Phoenix ELT.

Chicago Style Citation

Downing, and Locke. A University Course in English Grammar. 2nd ed. New York: Phoenix ELT, 2006.

MLA Citation

Downing, and Locke. A University Course in English Grammar. 2nd ed. New York: Phoenix ELT, 2006.

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