Bourke, J. (2011). What it Means to be Human: Reflections from 1791 to the Present. Counterpoint Press.
Darwin, C. (1896). The descent of man and selection in relation to sex (Vol. 1). D. Appleton.
Turing, A. Computing machinery and intelligence. Originally published by Oxford University Press on behalf of MIND (the Journal of the Mind Association) 59, 236 (1959), 433-60.
Searle, J. R. (1980). Minds, brains, and programs. Behavioral and brain sciences, 3(3), 417-424.
Jaynes, J. (1982). The Origin of Consciousness in the Breakdown of the Bicameral Mind (1976). I Harmondsworth: Penguin.