Brent Bowers (December 6, 2007). "Tracing Business Acumen to Dyslexia". New York Times. Cites a study by Julie Logan, professor of entrepreneurship at Cass Business School in London, among other literature.
Botha, Rudolf P; Everaert, Martin, eds. (2013). The evolutionary emergence of language: evidence and inference. Oxford, UK: Oxford University Press. ISBN978-0-19-965484-0. OCLC828055639.
Botha, Rudolf P.; Knight, Chris (2009). The prehistory of language. Oxford; New York: Oxford University Press. ISBN978-0-19-954587-2. OCLC819189595.