APA (7th ed.) Citation

Kolln, M., & Funk, R. (2009). Understanding English grammar (8th ed.). Longman.

Chicago Style (17th ed.) Citation

Kolln, Martha, and Robert Funk. Understanding English Grammar. 8th ed. New York: Longman, 2009.

MLA (9th ed.) Citation

Kolln, Martha, and Robert Funk. Understanding English Grammar. 8th ed. Longman, 2009.

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