APA (7th ed.) Citation
Greenbaum, S., & Quirk, R. (1990). A Student's Grammar of the English Language (2.impression.). Longman Group UK.
Chicago Style (17th ed.) Citation
Greenbaum, Sidney, and Randolph Quirk. A Student's Grammar of the English Language. 2.impression. Harlow: Longman Group UK, 1990.
MLA (9th ed.) Citation
Greenbaum, Sidney, and Randolph Quirk. A Student's Grammar of the English Language. 2.impression. Longman Group UK, 1990.
Warning: These citations may not always be 100% accurate.