APA (7th ed.) Citation

Leech, G. N., & Svartvik, J. (1987). A communicative grammar of english. Longman.

Chicago Style (17th ed.) Citation

Leech, Geoffrey N., and Jan Svartvik. A Communicative Grammar of English. Londres: Longman, 1987.

MLA (9th ed.) Citation

Leech, Geoffrey N., and Jan Svartvik. A Communicative Grammar of English. Longman, 1987.