Cita APA

Douglas Biber ... [et al.]. (1999). Longman grammar of spoken and written english. England: Longman.

Chicago Style Citation

Douglas Biber ... [et al.]. Longman Grammar of Spoken and Written English. England: Longman, 1999.

Cita MLA

Douglas Biber ... [et al.]. Longman Grammar of Spoken and Written English. England: Longman, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.