Citing sources doesn't help because if Wikipedians
don't
like the
sources, they want to know why we've chosen this source and
not some
other. No matter how canonical it is, it'll be questioned,
because
they don't realize it's part of the canon.
You can make an argument based on how well the source is cited. That's one of the
additions that survived in [[WP:IRS]]:
"The scholarly acceptance of a source can be verified by confirming that the source
has entered mainstream academic discourse, for example by checking the scholarly citations
it has received in citation indexes."
German Wikipedia has a similar principle in [[WP:BLG]].
A source that has received 150 citations is more relevant to the article than one
that's received 3.
Andreas