APA (7th ed.) Citation

Leech G. Geoffrey. (1999). An A - Z of English Grammar& Usage. Longman, 1999.

Chicago Style (17th ed.) Citation

Leech G. Geoffrey. An A - Z of English Grammar& Usage. Longman, 1999, 1999.

MLA (9th ed.) Citation

Leech G. Geoffrey. An A - Z of English Grammar& Usage. Longman, 1999, 1999.

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