Thomas Stephen Szasz (1997). “The Manufacture of Madness: A Comparative Study of the Inquisition and the Mental Health Movement”, p.167, Syracuse University Press
"Hoyt's New Cyclopedia Of Practical Quotations" by Jehiel Keeler Hoyt, p. 598-600, Curiosities of Literature, Professors of Plagiarism and Obscurity, 1922.