Cita APA (7th ed.)

Biber, D. (2002). Longman student grammar of spoken and written English. Longman.

Cita Chicago (17th ed.)

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Harlow: Longman, 2002.

Cita MLA (9th ed.)

Biber, Douglas. Longman Student Grammar of Spoken and Written English. Longman, 2002.