Robert Hooke (1667). “Micrographia: Or, Some Physiological Descriptions of Minute Bodies Made by Magnifying Glasses. With Observations and Inquiries Thereupon”, p.18
Squeak Carnwath, John Berggruen Gallery (San Francisco, Calif.) (1994). “Squeak Carnwath, recent paintings: September 8-October 8, 1994, John Berggruen Gallery”
George Henry Lewes (1864). “Aristotle: a chapter from the history of science including analyses of Aristotle's scientific writings”, p.86, London : Smith, Elder and Company