Word: citation without author

Add a citation with only the publication year and no author

Write another sentence that starts with an author name, for example "Walters". When you add the citation at the end, search for "Walters" and click the reference that appears. Then before clicking the Enter key, click the reference and check the box for "Omit Author":

Click the Enter key twice. The reference is now added, but only with the publication year:

The bibliography should automatically be updated with the new source. If not, click the button "Refresh":