Cita APA (7th ed.)

Biber, D., Conrad, S., & Leech, G. (2002). Longman student grammar of spoken and written english. Longman/Pearson.

Cita Chicago (17th ed.)

Biber, Douglas, Susan Conrad, i Geoffrey Leech. Longman Student Grammar of Spoken and Written English. Harlow: Longman/Pearson, 2002.

Cita MLA (9th ed.)

Biber, Douglas, et al. Longman Student Grammar of Spoken and Written English. Longman/Pearson, 2002.