An essay on fire : By Mark Augustus Pictet Translated from the French, under the inspection of the author, by W.B.M.D. London: E. Jeffery. 1791. pp. 86-87, 117-123. OCLC85869483.
Tyndall, John (1863). Heat considered as a mode of motion: being a course of twelve lectures delivered at the Royal Institution of Great Britain in the season of 1862. New York State: D. Appleton. pp. 281-282. OCLC1297049.