Which reference sites do you trust?

[paulj]

While completing the tech edit on the 2nd edition of the PHP Anthology the issue of linking came up; specifically, linking to authoritative reference material on the web. It came up because I would often link to a Wikipedia page and half of the editing team were opposed to such preferential treatment of one web [...]
http://www.pheedo.com/img.phdo?i=1a1...1ace460bf9843b