Chú thích Oxford Calculators

  1. ↑ Agutter, Paul S.; Wheatley, Denys N. (2008) "Thinking About Life"
  2. ↑ Gavroglu, Kostas; Renn, Jurgen (2007) "Positioning the History of Science"
  3. ↑ Paul S. Agutter, and Denys N. Wheatley (biên tập). Thinking About Life. Springer. ISBN 978-1-4020-8865-0. 
  4. ↑ Clifford Truesdell, Essays in The History of Mechanics, (Springer-Verlag, New York, 1968)
  5. ↑ Carl B. Boyer, Uta C. Merzbach. A History of Mathematics. 
  6. ↑ Norman F. Cantor (2001). In the Wake of the Plague: The Black Death and the World it Made. tr. 122.  Đã bỏ qua tham số không rõ |url-access= (trợ giúp)