Forum:SH:When should quotation marks be used in Sources and Appearances?

I've noticed that when templates are used in Sources and Appearances, sometimes the article name has quotation marks, and sometimes it doesn't. For example, in Featured Article Sith magic this source has quotation marks:

But some sources don't have quotation marks, like this one:

I checked the Layout Guide and I could not find any guidelines. I think that the quotation marks distinguish the article title from the name of the Magazine or website it's from. Thoughts?-- Richterbelmont10  ( come in R2! ) 00:17, September 4, 2014 (UTC)