These steps work for both Zotero and Mendeley citation management programs. Screenshots show a Zotero library.
1. Open your other citation manager library, click on the File > Export Library. Choose Export format as RIS, then click "OK" to save the files.
![](http://lgimages.s3.amazonaws.com/data/imagemanager/6601/exportris.png)
2. In EndNote, click File > Import > File.
![](http://lgimages.s3.amazonaws.com/data/imagemanager/6601/en_file_import.png)
3. Click the "Choose..." button and select the file you exported. Set Import Option to Reference Manager (RIS) and click Import.
![](http://lgimages.s3.amazonaws.com/data/imagemanager/6601/import_ris.png)