The following resources were used in the writing of the Introduction to Programming Concepts article series:

• Amma, P. (2005). Geo::PostalAddress - Country specific postal address parsing / formatting. Retrieved August 6, 2009.
• Farrell, J. (2008). Programming logic and design, comprehensive (5th ed.). Boston: Thomson Course Technology.
• Hotch, R. (1995). Accounting programs …