Benton, W. P. Encyclopaedia Britannica 21: Sordello to Textbooks.
芝加哥风格引文Benton, William. Publisher. Encyclopaedia Britannica 21: Sordello to Textbooks. Chicago : Encyclopaedia Britannica, Inc.
MLA引文Benton, William. Publisher. Encyclopaedia Britannica 21: Sordello to Textbooks.
警告：这些引文格式不一定是100％准确.