^Asimov, Isaac (1996) . "The Robot Chronicles". Gold. London: Voyager. pp. 224–225. ISBN 0-00-648202-3.
^Asimov, Isaac (1983). "4 The Word I Invented". Counting the Eons. Doubleday. "Robotics has become a sufficiently well developed technology to warrant articles and books on its history and I have watched this in amazement, and in some disbelief, because I invented … the word"