Google announced that a citation function has been added back into Google Documents.
Now when you use the Explore function in Google Docs you can choose to add citations to your document in MLA, APA, or Chicago style. The citation function only works when you're using the Explore function to find websites. It doesn't work for image citations.
The restored citation function in Google Docs is available now to most users. G Suite for Education users should see it by tomorrow.