The word "
A person or thing from which something comes into being or is derived or
obtained: alternative sources of energy; the
... performance; able to be t...
writingcenter.appstate.edu/sites/writingcenter.appstate.edu/files/Credible v Non-Credible Sources13.pdf
credible sources can damage a writer's relationship with his or her readers. Keep
able to be trusted to do or provide what is needed : able to be relied on. : able to
be believed : likely to be true or correct.