"credibility from" is a valid phrase in written English.
It is used to refer to the source of someone's believability. For example, "The mayor was able to gain credibility from the townspeople as a leader."
This gave him the all-important respect and credibility from the front line troops.
They borrow credibility from election polls, which we have learned to trust.
"These were people of credibility from conservative circles," Mr. Miller, the Austin lobbyist, said.
I'm in sales, so I get 2-3% credibility from the way I dress.
The court seems to derive its credibility from the youths' firsthand knowledge of the system.
I had contacts in the television industry and some credibility from working in computer displays.
But the public arguments underlined the complexity of the whole operation and sapped credibility from the CPA and the GC.
The Council nearly destroyed its credibility from the start when some of the worst abusers were immediately elected members.
The paper got undeserved credibility from the book; now the book may be devalued by the paper.
Reid's apology gave "Game Change" an aura of credibility from the start, and silence from other major figures helped.
The company derives credibility from its partnership with Michel Rolland, a world-famous winemaking consultant based in Bordeaux.
