Penrose, R. (1994). Shadows of the mind: A search for the missing science of consciousness. Oxford University Press.
芝加哥风格引文Penrose, Roger. Shadows of the Mind: A Search for the Missing Science of Consciousness. Oxford: Oxford University Press, 1994.
MLA引文Penrose, Roger. Shadows of the Mind: A Search for the Missing Science of Consciousness. Oxford University Press, 1994.
警告：这些引文格式不一定是100％准确.