Biber, D. (1999). Longman grammar of spoken and written English. Longman.
Chicago Style (17th ed.) CitationBiber, Douglas. Longman Grammar of Spoken and Written English. Harlow, Eng: Longman, 1999.
MLA引文Biber, Douglas. Longman Grammar of Spoken and Written English. Longman, 1999.
警告:這些引文格式不一定是100%准確.