Cita APA

Johansson, S., Leech, G., Conrad, S., Finegan, E., Quirk, R., & Biber, D. (1999). Longman Grammar of Spoken and Written English. Harlow: Longman.

Citación estilo Chicago

Johansson, Stig, Geoffrey Leech, Susan Conrad, Edward Finegan, Randolph Quirk, and Douglas Biber. Longman Grammar of Spoken and Written English. Harlow: Longman, 1999.

Cita MLA

Johansson, Stig, et al. Longman Grammar of Spoken and Written English. Harlow: Longman, 1999.