HALPERN, Paul. What's Science Ever Done for Us?: What The Simpsons Can Teach Us About Physics, Robots, Life, and the Universe. [s.l.]: John Wiley and Sons, 2007. Dostupné online. ISBN978-0-470-11460-5. S. 69.
HALPERN, Paul. What's Science Ever Done for Us?: What The Simpsons Can Teach Us About Physics, Robots, Life, and the Universe. [s.l.]: John Wiley and Sons, 2007. Dostupné online. ISBN978-0-470-11460-5. S. 80–81.
BROWN, Alan S.; LOGAN, Chris. The Psychology of the Simpsons: D'oh!. [s.l.]: BenBella Books, Inc, 2006. Dostupné online. ISBN1-932100-70-9. S. 124.
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The Simpsons: The PTA Disbands!. archive.ph [online]. 2012-09-14 [cit. 2022-01-19]. Dostupné v archivu pořízeném z originálu dne 2012-09-14.