Electronic/World Wide Web>Internet Article:  Hartnett, Kevin (March 5, 2019), The Universe’s Ultimate Complexity Revealed by Simple Quantum Games, Quanta Magazine, Retrieved on 2019-11-09

Source Material [www.quantamagazine.org]

Proceedings of Meetings and Symposia>Speech:  Feynman, Richard (12/11/1965), The Development of the Space-Time View of Quantum Electrodynamics, Nobel, Retrieved on 2015-02-06

Source Material [www.nobelprize.org]

Periodicals>Magazine Article:  Hawking , Stephen W. (1977), The Quantum Mechanics of Black Holes, Scientific American, 1977, 236, 34-40., Retrieved on 2012-06-04