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 you can more than count on. Nation's Business, 83(6), 45. Retrieved July 16, 2009, from Academic Search Premier database.
• Howe, M. (2006). PDF::EasyPDF - PDF creation from a one-file module, with postscript-like controls. Retrieved August 6, 2009.
• Kingsley-Hughes, A. & Kingsley-Hughes, K. (2005). Beginning programming. Indianapolis: John Wiley & Sons.
• Lidie, S. & Walsh, N. (2002). Mastering Perl/Tk. Sebastopol, CA: O'Reilly.
• McKay, J. & Bath, G. (2008). The software test engineer's handbook: A study guide for the ISTQB test analyst and technical test analyst advanced level certificates. Santa Barbara, CA: Rocky Nook.
• Scott, M. L. (2009). Programming language pragmatics (3rd ed.). San Francisco, CA: Morgan Kaufmann.
• Senn, J. A. (2004). Information technology: Principles, practices, opportunities (3rd ed.). Upper Saddle River, NJ: Pearson.
• Thomas, D. (2005) Programming Ruby: The pragmatic programmer's guide (2nd ed.). Raleigh, NC: The Pragmatic Bookshelf.