APA (7th ed.) Citation

Biber, D., Johansson, S., Leech, G. N., Conrad, S., & Finegan, E. (1999). Longman grammar of spoken and written English. Pearson Education.

Chicago Style (17th ed.) Citation

Biber, Douglas, Stig Johansson, Geoffrey N. Leech, Susan Conrad, and Edward Finegan. Longman Grammar of Spoken and Written English. Londres: Pearson Education, 1999.

MLA (9th ed.) Citation

Biber, Douglas, et al. Longman Grammar of Spoken and Written English. Pearson Education, 1999.