Thomson Reuters’s reference management system EndNote makes it easy to store, share, annotate and export your citations in selected formats.
Adding references from EndNote is easy. You’ll need to do a little one-time prep work first.
Download the BibTeX output style from the EndNote homepage.
Add the BibTeX output style to your EndNote Styles folder.
Open EndNote and through the Edit drop-down menu, go to Output Styles > Open Style Manager...
Check the BibTeX Export option...