Niles' weekly register40. May 1831: 231 [2013-12-21]. (原始内容存档于2014-01-11). Quoting New York Representative Churchill C. Cambreleng, first appearing in the New York Standard, May 12, 1831.
Gambetta. The Contemporary Review (London: Isbister and Company). February 1883, 43: 185 [April 15, 2010]. (原始内容存档于2014-01-11). Anonymous author signing as "A German".
Greenough, James Bradstreet; George Lyman Kittredge. Words and their ways in English speech. The Macmillan Company. 1920: 302 [April 15, 2010]. (原始内容存档于2014-01-11).引文使用过时参数coauthors (帮助)
Niles' weekly register40. May 1831: 231 [2013-12-21]. (原始内容存档于2014-01-11). Quoting New York Representative Churchill C. Cambreleng, first appearing in the New York Standard, May 12, 1831.
Gambetta. The Contemporary Review (London: Isbister and Company). February 1883, 43: 185 [April 15, 2010]. (原始内容存档于2014-01-11). Anonymous author signing as "A German".
Greenough, James Bradstreet; George Lyman Kittredge. Words and their ways in English speech. The Macmillan Company. 1920: 302 [April 15, 2010]. (原始内容存档于2014-01-11).引文使用过时参数coauthors (帮助)