APA (7th ed.) Citation
Leech, G., & Svartvik, J. (1975). A communicative grammar of English. Longman.
Chicago Style (17th ed.) Citation
Leech, Geoffrey, and Jan Svartvik. A Communicative Grammar of English. England: Longman, 1975.
MLA (9th ed.) Citation
Leech, Geoffrey, and Jan Svartvik. A Communicative Grammar of English. Longman, 1975.
Warning: These citations may not always be 100% accurate.