Cita APA (7a ed.)

Biber, D., Johansson, S., Leech, G. N., Conrad, S., Finegan, E., & Quirk, R. (2007). Longman grammar of spoken and written English. Longman.

Cita Chicago Style (17a ed.)

Biber, Douglas, Stig Johansson, Geoffrey N. Leech, Susan Conrad, Edward Finegan, y Randolph Quirk. Longman Grammar of Spoken and Written English. London: Longman, 2007.

Cita MLA (9a ed.)

Biber, Douglas, et al. Longman Grammar of Spoken and Written English. Longman, 2007.