Carl B. Boyer (1949), The History of Calculus and Its Conceptual Development, New York: Hafner, reprinted in 1959, New York: Dover.
John Longeway, (2003), "William Heytesbury", in The Stanford Encyclopedia of Philosophy. Accessed 2012 January 3.
Uta C. Merzbach and Carl B. Boyer (2011), A History of Mathematics", Third Edition, Hoboken, NJ: Wiley.
Edith Sylla (1982), "The Oxford Calculators",in Norman Kretzmann, Anthony Kenny, and Jan Pinborg, edd. The Cambridge History of Later Medieval Philosophy: From the Rediscovery of Aristotle to the Disintegration of Scholasticism, 1100-1600, New York: Cambridge.
Boccaletti, Dino (2016). Galileo and the Equations of Motion. Heidelberg, New York: Springer. ISBN978-3-319-20134-4.
