Iain McGilchrist and Michael Gazzaniga : The Divided Brain
 I. McGilchrist, The Master and His Emissary: The Divided Brain and the Making of the Western World. Yale University Press, 2010, p. 608.
 M. S. Gazzaniga, Who's in Charge?: Free Will and the Science of the Brain. Ecco, 2011.
 Iain McGilchrist's webpage
 Edge's page of Michael Gazzaniga
 V. S. Ramachandran, The Tell-Tale Brain: A Neuroscientistâs Quest for What Makes Us Human. W. W. Norton & Company, 2011, p. 357.