User blog:Dimensionshark/Cover Art Copyright

I was hoping you guys would be able to help me with a problem...

I've recently started a wiki for R. L. Stine's short-lived book series, The Nightmare Room (you can visit the wiki here if you want, some help over there would be greatly appreciated... just sayin'...) and I've found a few images of cover art for some of the books in the series. I assumed that it's probably not a great idea to just upload the images without any knowledge of Wikia's copyright policy on cover art images, so I was wondering if there's an article where I could read the rules on image right?

Any reply would be very helpful. Cheers,

Dimensionshark