Book Theall, Donald F. – The virtual Marshall McLuhan. – Montréal : McGill-Queen University Press, 2001. – 305 p.
Text in periodical Graham, David. – «Attitudes towards technology». – Radical Software. – Vol. 1, no. 5 [(1972)]. – P. 22-29. Also available on the Internet. {{www.radicalsoftware.org}}