APA引文

Keen, M. H. (1967). A history of Medieval Europe. Routledge & Paul.

Chicago Style (17th ed.) Citation

Keen, Maurice Hugh. A History of Medieval Europe. London: Routledge & Paul, 1967.

MLA引文

Keen, Maurice Hugh. A History of Medieval Europe. Routledge & Paul, 1967.

警告：這些引文格式不一定是100％准確.