^Rooney, Anne. The History of Mathematics. Rosen Publishing Group. 2012: 65. ISBN 9781448873692. An identical metric system to that eventually introduced in France was proposed in 1668 by Bishop John Wilkins, a founder of the Royal Society in England. Pat Naughtin (speaker). Metrication Matters. Google Tech Talks. Google. 事件发生在 59:30. 6 August 2007 (22 August 2007) [2016-08-05]. (原始内容存档于2020-12-28). Who invented the International System of Units (SI) the modern metric system? ... Where? ... The metric system was invented in England ...Who? ... John Wilkins ...请检查|publication-date=中的日期值 (帮助)
^Feingold, Mordechai, Mathematical Sciences and New Philosophies, Tyacke, Nicholas (编), The History of the University of Oxford, IV Seventeenth-century Oxford: 380, 1997