ebrary, Inc. (2006). The Hutchinson chronology of world history. Helicon.
芝加哥风格引文ebrary, Inc. The Hutchinson Chronology of World History. Abingdon, England: Helicon, 2006.
MLA引文ebrary, Inc. The Hutchinson Chronology of World History. Helicon, 2006.
警告：这些引文格式不一定是100％准确.