Cita APA (7th ed.)

Leech, G. N., & Svartvik, J. (2002). A communicative grammar of English (3rd ed.). Longman.

Cita Chicago (17th ed.)

Leech, Geoffrey N., i Jan Svartvik. A Communicative Grammar of English. 3rd ed. London: Longman, 2002.

Cita MLA (9th ed.)

Leech, Geoffrey N., i Jan Svartvik. A Communicative Grammar of English. 3rd ed. Longman, 2002.