::I agree with Tom harrison and Karanacs...but I don't agree that using other encyclopedias as a template is the way to go. Book sourcing needs to be increased as Karanacs mentions, but in terms of history, this event is still  relatively recent so there is no reason to not use news sourcing if that is available. Using webbased sourcing is helpful since it allows for greater ease of source checking by all and since the cites allow for parameters which displays in the refs when the news report was made and when it was cited, it is easy to update/or remove refs if they go dead.