Those are Ancestry codes, of which I'm slightly familiar even though I don't have a subscription. I don't know if there's a way to turn them into proper references, although it appears the original PM cites the codes in reference to the sources at the bottom of the profile.
If you wanted to turn them into just plain old links and remove the codes, I don't see a big issue with this. However, someone more Ancestry familiar might sound off and say those are key in some way to turning them back into true links to the Ancestry sources.
Although the other option would be to replace them with FamilySearch links if you feel this would be appropriate. Since everyone can get to FS and only those with some special access can get to Ancestry, this wouldn't be a bad solution. You might even leave the bottom 4 bullets that mention the Ancestry sources (even though they're missing the actual links) and just add the FS sources.
Just my 2 cents.
