How to cite CC attribution?

[ETERNAL]

I'm relying on some Creative Commons materials for one of my projects (specifically Photoshop brushes and sound effects), and I'm wondering how you're supposed to provide attribution to fulfil that requirement of the license. Are sites like freesound.org and brusheezy.com considered sources or are they more like search engines? Tracking down the individual websites of content creators sounds difficult (if not impossible) considering some of these were uploaded 5+ years ago.

[OokamiKasumi]

I'm relying on some Creative Commons materials for one of my projects (specifically Photoshop brushes and sound effects), and I'm wondering how you're supposed to provide attribution to fulfil that requirement of the license. Are sites like freesound.org and brusheezy.com considered sources or are they more like search engines? Tracking down the individual websites of content creators sounds difficult (if not impossible) considering some of these were uploaded 5+ years ago.

A lot of the resources I use to make my graphics are seriously old, like 10 or more years old. When I can't remember the name of the individual piece's creator, I attribute the site or location it came from.

For a game, I make end credits -- just like in a movie, and that's where all those listings go. When the game ends, the credits roll, and in most of my games, they're also accessible from either the front page or the bonus page in addition to being at the end.

This is only 1 of 11 credit images that dissolve in and out at the end of the game.

For the credits, I have a screen code that I reuse in each game I make. Basically, I paste the code as-is onto it's own .rpy page (credits.rpy) and simply swap out all the images. I don't even change the image names.