Master bibliography

Hi All

Apologies if this question has been asked before:

I am currently writing my PhD thesis, and it was easier to write the chapters as separate documents as I went along. Each chapter/document has a list of references at the end (and some citations are used in more than one chapter).

I could try to merge the whole thing together as one enormous document, but I think I might end up with problems if I did that - there are several large images as well as several hundred pages of text in total.

What I would really like to do is move the lists of references out of the individual chapter documents and create a single new bibliography file that just has all the references in it together, and nothing else.

Is there an easy way to do this?

I am using Endnote x7 (v7.5.3) with Microsoft Word 2016 (v15.24) on a Mac with MacOS v10.11.5

Many thanks for your help.