Merging Word text - some with EndNote citations, some with citations not in EndNote

I’m trying to help someone in my department with his document. He received a Word 2010 document that has EndNote 7.4 references in it. He needs to add text from several other Word docs that have references that aren’t EndNote. I’m trying to figure out how best to do this. Greatly appreciate any help!

Thanks a lot,

Steph

The original document has Endnote citations. My colleague needs to copy and paste text into it from Word documents that have references that were inserted with either Word or something else.