"Zach Galifianakis Talks Working with Will Ferrell, His “Non-Sexual” Character, and Disliking Children on the Set of THE CAMPAIGN". Interview with Scott Wampler, collider.com. July 25, 2012.
"LOS ANGELES TIMES INTERVIEW : Jack Kevorkian : Defending Assisted Suicide Right Up to the End". Interview With Jack Lessenberry, articles.latimes.com. December 12, 1993.