APA

Leech G. N., Svartvik J., . (2002). A communicative grammar of english. New York: Routledge.

Chicago

Leech Geoffrey Neil, Svartvik Jan, . 2002. A communicative grammar of english. New York: Routledge.

Harvard

Leech G. N., Svartvik J., . (2002). A communicative grammar of english. New York: Routledge.

MLA

Leech Geoffrey Neil, Svartvik Jan, . A communicative grammar of english. New York: Routledge. 2002.