«Billy West: The Many (Cartoon) Voices In His Head». Fresh Air. National Public Radio, 15-07-2010 [Consulta: 5 setembre 2010]. «'His voice is basically what I sounded like when I was 25. Kinda plain vanilla. I had nothing special about my voice, really. And I just thought, 'Well, I know that character so well.' ... [T]o try to do someone else's real voice is kind of tough.'»
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Wertheimer, Ron. «A Feeling We're Not in Springfield.. .». The New York Times, 26-03-1999. [Consulta: 19 juny 2008]. «Originally I had auditioned for Dr. Zoidberg, Bender, the Professor and Fry. But I didn't get Fry — it went to Charlie Schlatter, who’s a heck of an actor and a great voice guy, but they just changed plans. They said to me, 'Fry’s 25, so bear that in mind.' It became a high-pitched version of me, trying to remember the dumb innocence of being 25. At that age I had no idea where I was going, I was working for U-Haul shoveling dirt out of trucks, I was washing dishes at nursing homes. I always thought I had this whiny, complaining voice — this plain vanilla voice, but I guess if you’re in neutral, you can go anywhere»
