Mark Twain, Susan K. Harris (1994). “Historical Romances: The Prince and the Pauper, A Connecticut Yankee in King Arthur's Court, Personal Recollections of Joan of Arc”, p.115, Library of America
"Land Your Dream Job: High-Performance Techniques to Get Noticed, Get Hired, and Get Ahead". Book by John Middleton, Ken Langdon, and Nikki Cartwright, 2007.