Massé, K. (3 April 2014). "Continuous vs Continual". Lean Enterprise Institute. Archived from the original on December 7, 2017. Retrieved 6 December 2017.
Massé, K. (3 April 2014). "Continuous vs Continual". Lean Enterprise Institute. Archived from the original on December 7, 2017. Retrieved 6 December 2017.