In APA format, references with three or more authors list the first author in an in text citation, and then use et al. If you are using Word and getting citations with the first author, but et al does not follow, try this:
1. Identify a sample reference that is not formatted correctly.

2. Go back to the EndNote program and look at that reference in Edit view. You can get to the record by selecting "Edit and Manage Citations" in Word, and clicking the Edit button. The record will go back to the EndNote Program.

3. Look to see if each separate author is on their own line. If not, you can fix it manually. If you have many records that need to be fixed, or need to check many records, go to step 4 to see how to let EndNote fix it automatically. If the authors are in separate lines but et al is not working, try checking the et al settings in your style. That is the next box on this guide.

4. To have EndNote Edit it, right-click on the reference in the EndNote program and select Find Reference Updates.

5. EndNote will find a record with the authors listed in the proper format. You have the option to update all fields, or you can copy/paste the correct formatting into the field. When the field is corrected, click Save and Continue.

6. EndNote will give you a confirmation screen. Click OK.
7. Go back to the Word document and select Update Bibliography. Once you've updated the Word document, you should see et al in the in-text citations.