Cita APA (7a ed.)

LEECH, G. (2007). A COMMUNICATIVE GRAMMAR OF ENGLISH, 3RD ED. Pearson.

Cita Chicago Style (17a ed.)

LEECH, G. A COMMUNICATIVE GRAMMAR OF ENGLISH, 3RD ED. New Delhi: Pearson, 2007.

Cita MLA (9a ed.)

LEECH, G. A COMMUNICATIVE GRAMMAR OF ENGLISH, 3RD ED. Pearson, 2007.