Note: Not everything in MERLOT is licensed under a Creative Commons license.
Step 1: Go to MERLOT (http://www.merlot.org/merlot/index.htm)
Step 2: Click Search. Choose Search Materials.
Step 3: Under Material Advanced Search, expand the Find materials by Cost, Copyright, Creative Commons Licenses, Accessibility option. Check the Yes box next to Creative Commons.
Step 4: Verify that the material is, in fact, licensed under a Creative Commons license. From the results screen, click on title of the item you wish to use. Scroll down to About.