APA (7e ed.) Bronvermelding

Biber, D., Conrad, S., & Leech, G. N. (2002). Longman student grammar of spoken and written English. Pearson Education Limited.

Chicago (17e ed.) Bronvermelding

Biber, Douglas, Susan Conrad, en Geoffrey N. Leech. Longman Student Grammar of Spoken and Written English. Londres: Pearson Education Limited, 2002.

MLA (9e ed.) Bronvermelding

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