APA引文

Freeman, L., & Underhill, E. (1997). The cloud of unknowing. Element.

Chicago Style (17th ed.) Citation

Freeman, Laurence, and Evelyn Underhill. The Cloud of Unknowing. Rockport, Mass. Shaftesbury [u.a.]: Element, 1997.

MLA引文

Freeman, Laurence, and Evelyn Underhill. The Cloud of Unknowing. Element, 1997.

警告：這些引文格式不一定是100％准確.