I agree that Wookieepedia is fan produced, but unless the Star Wars Databank are willing to put more than 2 sentances about 1 in 10 characters online, you'll have too buy the hundreds of books, novels, comics, games and essential guides, if you want to be 100% sure on what's reliable.... then we'll still have to take your word for it
any information added to wookieepedia must be sourced and mod verified, you could write what you want, but I assure you it wont stay on the site if it's wrong