Electronic/World Wide Web>Internet Article:  Musk, Elon and Chen, Angela (20160602), Elon Musk: We're Probably Living in a Video Game, Retrieved on 2016-06-03

Source Material [gizmodo.com]

Electronic/World Wide Web>Internet Article:  McGinn, Colin (April 8, 2015), Philosophical Fun for the Whole Family, Retrieved on 2015-04-09

Source Material [www.colinmcginn.net]

Periodicals>Journal Article:  Bostrom, Nick (May 16, 2003), The Simulation Argument: Why the Probability that You Are Living in a Matrix is Quite High, Times Higher Education Supplement, Retrieved on 2015-04-01

Source Material [www.simulation-argument.com]