That's a good question, might be difficult to do without clutter. You could hyperlink the first source, and then use a series of numbers just on one line to keep it neat, something like:

siasat.com and 7 other sources: 1, 2, 3, 4, 5, 6, 7

You could prettify that a bit but that's kind of what I'd expect so I can read the different angles of the Flashpoint for myself.