Prodigies, Encyclopedia of Creativity (Second Edition). Academic Press, 261–265. o.. DOI: 10.1016/B978-0-12-375038-9.00182-5 (2011. október 8.). ISBN 978-0-12-375038-9. Hozzáférés ideje: 2015. augusztus 31. „For the purposes of this and future research, a prodigy was defined as a child younger than 10 years of age who has reached the level of a highly trained professional in a demanding area of endeavor.”
Rose, Lacey. „Whiz Kids”, Forbes, 2007. március 2. (Hozzáférés: 2015. augusztus 31.) „At the moment, the most widely accepted definition is a child, typically under the age of 10, who has mastered a challenging skill at the level of an adult professional.”
Prodigies, Encyclopedia of Creativity (Second Edition). Academic Press, 261–265. o.. DOI: 10.1016/B978-0-12-375038-9.00182-5 (2011. október 8.). ISBN 978-0-12-375038-9. Hozzáférés ideje: 2015. augusztus 31. „For the purposes of this and future research, a prodigy was defined as a child younger than 10 years of age who has reached the level of a highly trained professional in a demanding area of endeavor.”
