Bibliography
- Anderson, John G. A Technical Shop Mathematics. New York: Penguin Books, 1989.
- Ball, W. W. Rouse. A Short Account of the History of Mathematics. New York: Dover, 1960.
- Blocksma, Mary. Reading the Numbers. New York: Penguin Books, 1989.
- The Economist Desk Companion. New York: John Wiley and Sons, 1998.
- Fenna, Donald. Dictionary of Weights, measures, and Units. Oxford, UK: Oxford University Press, 2002.
- Pretorius, Anna. The Math Reference Book. Victoria, BC: Com Graph Publications, 1995.
- Ancient Greek Measures. Retrieved June 29, 2005, from http://www.lajzar.co.uk/unit/system/old_gr.html
- Ancient Roman Measaures. Retrieved June 29, 2005, from http://www.lajzar.co.uk/unit/system/old_it.html
- Graves, David and Jane Graves. Weights and Measures. 1995. Retrieved July 4, 2005, from http://www.abu.nb.ca/ecm/topics/custom5.htm
