9. Sources Sieber, Tina (2009) “10 PowerPoint Tips for Preparing a Professional Presentation” retrieved September 1, 2011 from: http://www.makeuseof.com/tag/10-tips-for-preparing-a-professional- presentation Splane, Mike (2006) “PowerPoint Presentation Advice” retrieved September 1,2011 from: http://www.cob.sjsu.edu/splane_m/presentationtips.htm Wax, Dustin M. (2010) “10 Tips for More Effective PowerPoint Presentations” retrieved September 1, 2011 from: http://www.lifehack.org/articles/technology/10-tips- for-more- effective-powerpoint-presentations.html