To echo the previous poster: Intermediate+ level, I'd want more. At a novice
level, that's kind of what I'd expect from a lot of entries. If it's a
well-trusted source- like the Tudor Tailor- no problem. If it's something
not well-known, I'd prefer to see a couple primary sources showing that it's
trustworthy and not a one-off weirdness. Specifically some of the sources it
cites.