APA (7th ed.) Citation

Leech, G. N. (1997). An A - Z of English grammar and usage (4. impr.). Longman.

Chicago Style (17th ed.) Citation

Leech, Geoffrey N. An A - Z of English Grammar and Usage. 4. impr. Harlow: Longman, 1997.

MLA (9th ed.) Citation

Leech, Geoffrey N. An A - Z of English Grammar and Usage. 4. impr. Longman, 1997.