7/3

MOSS, T., 2005. Seven Screen Reader Usability Tips [online]. Collingwood: Sitepoint. Available at: [Accessed 12 Dec 2007].
MOSS, T., 2006. Beyond the Guidelines: Advanced Accessibility Techniques [online]. Collingwood: Sitepoint. Available at: [Accessed 12 Dec 2007].

NIELSEN, A., 2000. Why You Only Need to Test with 5 Users [online]. Fremont: Nielsen Norman