(en) Guinness Book IQ. Encyclopedia of Human Thermodynamics, Human Chemistry, and Human Physics. Geraadpleegd op 5 juni 2012.
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(en) Sam Knight, Is a high IQ a burden as much as a blessing?. Financial Times (10 april 2009). Gearchiveerd op 13 mei 2023. Geraadpleegd op 13 mei 2023. “In 1990, two years after inducting Savant into its Hall of Fame, the publisher, in its parlance, “rested” its high IQ category altogether, saying it was no longer satisfied that intelligence tests were either uniform or reliable enough to produce a single record holder.”
