^Pam Peters, Pam. The Cambridge guide to English usage. Cambridge, UK: Cambridge University Press. 2004: 226. ISBN 0-521-62181-X. The Latin plural genii is only used in reference to mythical spirits...
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Harold Bloom. Genius: A Mosaic of One Hundred Exemplary Creative Minds. Warner Books. November 2002. ISBN 0-446-52717-3.
Clifford A. Pickover. Strange Brains and Genius: The Secret Lives of Eccentric Scientists and Madmen. Plenum Publishing Corporation. 1998-05-01. ISBN 0-306-45784-9.
James Gleick. Genius: The Life and Science of Richard Feynman. Pantheon. 1992-09-29. ISBN 0-679-40836-3.
David Galenson. Old Masters and Young Geniuses: The Two Life Cycles of Artistic Creativity. Princeton University Press. 2005-12-27. ISBN 0-691-12109-5.