The submission guide's goofs section lists that factual errors can include a reference at the end of the submission. I didn't see a separate text box for said reference but wanted to include a screen grab that proved my "goof." The submission was automatically rejected with errors for:
- "bad formatting / no punctuation at the end"
This makes sense because it was an imgur URL.
- "URLs will not be published"
Okay ... but my reference material was a link.