Geraci, Robert M. "Introduction." Apocalyptic AI: Visions of Heaven in Robotics, Artificial Intelligence, and Virtual Reality. : Oxford University Press, 2010-02-05. Oxford Scholarship Online. 2010-05-01. Date Accessed 18 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195393026.001.0001/acprof-9780195393026-chapter-0>.
Geraci, R.(2010-02-05). Introduction. In Apocalyptic AI: Visions of Heaven in Robotics, Artificial Intelligence, and Virtual Reality. : Oxford University Press. Retrieved 18 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195393026.001.0001/acprof-9780195393026-chapter-0.
Geraci, Robert M. "Introduction." In Apocalyptic AI: Visions of Heaven in Robotics, Artificial Intelligence, and Virtual Reality. : Oxford University Press, 2010-02-05. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195393026.001.0001/acprof-9780195393026-chapter-0.
Geraci RM. Introduction. In: Geraci R. Apocalyptic AI: Visions of Heaven in Robotics, Artificial Intelligence, and Virtual Reality. Oxford University Press; 2010. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195393026.001.0001/acprof-9780195393026-chapter-0. Accessed June 18, 2013.