APA-viite (7. p.)

Leech, G. (2002). A Communicative grammar of english (3rd ed.). Pearson.

Chicago-viite (17. p.)

Leech, Geoffrey. A Communicative Grammar of English. 3rd ed. Delhi: Pearson, 2002.

MLA-viite (9. p.)

Leech, Geoffrey. A Communicative Grammar of English. 3rd ed. Pearson, 2002.