APA引文

Bolton W F & Crystal, D. (1993). The English Language (2nd (1st 1975).). Penguin Books Ltd.

Chicago Edition Citation

Bolton W F & Crystal, David. The English Language. 2nd (1st 1975). England: Penguin Books Ltd, 1993.

MLA引文

Bolton W F & Crystal, David. The English Language. 2nd (1st 1975). Penguin Books Ltd, 1993.

警告：這些引文格式不一定是100％准確.