Adding references to your contribution to the Tuol Sleng article
Please follow the guidelines as mentioned in WP:CITE about how and what sort of sources to cite for your contribution. Also refer to WP:SOURCE to see notes about what sources are preferred as reliable sources. As far as I searched, the graffiti "artist" incident was only mentioned in a couple of blog posts. My suggestions:
- Get some reliable sources like AP, Reuters, AFP, BBC, CNN, etc.
- Make your section also much shorter. Maybe 4-5 sentences.
I personally think the graffiti artist has got enough attention and don't want to give him any more than he has already gotten.