APA

Leech G., Svartvik J., . (1986). A communicative grammer of english. London: Longman.

Chicago

Leech Geoffery, Svartvik Jan, . 1986. A communicative grammer of english. London: Longman.

Harvard

Leech G., Svartvik J., . (1986). A communicative grammer of english. London: Longman.

MLA

Leech Geoffery, Svartvik Jan, . A communicative grammer of english. London: Longman. 1986.