APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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