APA引文

William L Langer. (1968). An encyclopedia of world history. Boston, Massachusetts: Houghton Mifflin.

Trích dẫn kiểu Chicago

William L Langer. An Encyclopedia of World History. Boston, Massachusetts: Houghton Mifflin, 1968.

MLA引文

William L Langer. An Encyclopedia of World History. Boston, Massachusetts: Houghton Mifflin, 1968.

警告：這些引文格式不一定是100％准確.