Adam Clarke, Mrs. Richard Smith (1833). “An Account of the Infancy, Religious, and Literary Life of Adam Clarke ...: Written by One who was Intimately Acquainted with Him from His Boyhood to the Sixtieth Year of His Age”, p.18
"Life and Scientific Work of Peter Guthrie Tait: supplementing the two volumes of Scientific papers published in 1898 and 1900". Book by Knott, Cargill Gilston, p. 1-2, 1911.
Edmund Burke (1790). “Reflections on the Revolution in France, and on the proceedings in certain societies in London, relative to that event. In a letter intended to have been sent to a gentleman in Paris ... The seventh edition”, p.74