APA (7th ed.) Citation
Leech, G. (1991). An A-Z of English Grammar and Usage. Thomas Nelson and Sons.
Chicago Style (17th ed.) Citation
Leech, Geoffrey. An A-Z of English Grammar and Usage. Walton-on-Thames: Thomas Nelson and Sons, 1991.
MLA (9th ed.) Citation
Leech, Geoffrey. An A-Z of English Grammar and Usage. Thomas Nelson and Sons, 1991.
Warning: These citations may not always be 100% accurate.