1Clifford, Tim. American Coins and Bills (The Study of Money). Vero Beach, FL: Rourke Publishing LLC, 2009..
2Clifford, Tim. Money through the Ages (The Study of Money). Vero Beach, FL: Rourke Publishing LLC, 2009.
3Drobot, Eve. Money, Money, Money: Where It Comes From, How to Save It, Spend It, and Make It. Berkeley, CA: Publishers Group West, 2004.
4Forest, Christopher. The Dollar Bill in Translation: What It Really Means. Mankato, MN: Capstone Press, 2009.
5“Fun Facts about Money.” FederalReserveEducation. Accessed: May 21, 2013.
6Hall, Alvin D. Show Me the Money: How to Make Cents of Economics. New York, NY: DK Publishing, 2008.
7Kerner, Ian. “Sex or Money: What Makes You Happier?” CNN Health. “October 4, 2013. Accessed: May 30, 2013.
8McManus, Lori. Money through History (Understanding Money). Chicago, IL: Heinemann Library, 2012.
9“Men More Likely to Have Issues with Sex and Their Health When Wives Make More Money, Study Finds.” MailOnline. May 30, 2013. Accessed: May 30, 2013.
10“Secret History of the Credit Card.” PBS. Nov 23, 2004. Accessed: May 21, 2013.
11“The History of Money.” NOVA. October 26, 1996. Accessed: May 21, 2013.
12Young, Robert. Money (Household History). Minneapolis, MN: Carolrhoda Books, Inc, 1998.