Cita APA

Leech, G. N., Cruickshank, B., & Ivanic, R. (1989). An A-Z of english grammar and usage. Edward Arnold.

Citación estilo Chicago

Leech, Geoffrey N., Benita Cruickshank, and Roz Ivanic. An A-Z of English Grammar and Usage. Londres: Edward Arnold, 1989.

Cita MLA

Leech, Geoffrey N., et al. An A-Z of English Grammar and Usage. Edward Arnold, 1989.