If you go to wikis other than the Camp Half-Blood Wiki, you may have noticed they use references. This is a useful tool used to show the source of various information. I think the Camp Half-Blood Wiki should use them. It's simpler than it sounds.
Here's an example:
If you type: Percy said being a demigod is bad.<ref>The Lightning Thief, Page 1</ref>
You get: Percy said being a demigod is bad.
Then, at the bottom of the page you put:
And you get:
- ↑ The Lightning Thief, Page 1