APA引文

Allen, R. (2002). Punctuation: One step ahead. Oxford University Press.

Chicago Edition Citation

Allen, Robert. Punctuation: One Step Ahead. New York: Oxford University Press, 2002.

MLA引文

Allen, Robert. Punctuation: One Step Ahead. Oxford University Press, 2002.

警告：这些引文格式不一定是100％准确.