You can use ( ) when mentioning a reference so the CE knows where to find it.
For instance, if you say "Fifty percent of college graduates are women." (NCES.org) or something similar to that. Or, if you say, "According to the National Center for Education Statistics....(page 3)" to indicate the page of the pdf where you got the information or the url where you found it.
The CE will remove the references in parenthesis prior to the article being published.
Hope this makes sense I'm a little tired today!
