Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Kevin Cogan:

"

Gordon Johncock, Johnny Rutherford[3] and Bobby Unser[1] later placed some blame of the accident on the polesitter Rick Mears, for bringing the field down at such a slow pace. Gordon Johncock, who went on to win the 1982 race, pointed out that Andretti had jumped the start, and could have avoided the spinning car of Cogan had he been lined up properly in the second row.[4] Foyt wrote a memoir of his career in 1983 and when mentioning the crash, in a more analytic form, assigned some blame on Mears for the slow start, while assigning Cogan the rest of the responsibility.