Graph/chart/map and citation

The image above shows how in school what the staff really worry about the most is dresscode.  Like in the graph above there more concern about uniforms being all wrong than other stuff like grades.

http://www.google.com/imgres?q=a+graph+about+students+dress+code&um=1&hl=en&tbm=isch&tbnid=Kfwu3svtC23GoM:&imgrefurl=http://graphjam.memebase.com/2011/08/23/funny-graphs-yes-my-strap-really-is-an-inch-wide/&docid=Fq5a16KzikxlhM&w=500&h=493&ei=bSNyTrP0FMXngQfQ_qH4CQ&zoom=1&iact=hc&vpx=261&vpy=108&dur=3328&hovh=223&hovw=226&tx=137&ty=65&page=3&tbnh=111&tbnw=108&start=16&ndsp=8&ved=1t:429,r:1,s:16&biw=793&bih=465