Famous for his aphorism, "the medium is the message," communications theorist Marshall McLuhan was an influential educator during the 20th century.
Marshall McLuhan. (2013). The Biography Channel website. Retrieved 07:09, May 21, 2013, from http://www.biography.com/people/marshall-mcluhan-9393821.
Marshall McLuhan. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/marshall-mcluhan-9393821 [Accessed 21 May 2013].
"Marshall McLuhan." 2013. The Biography Channel website. May 21 2013, 07:09 http://www.biography.com/people/marshall-mcluhan-9393821.
"Marshall McLuhan," The Biography Channel website, 2013, http://www.biography.com/people/marshall-mcluhan-9393821 [accessed May 21, 2013].
"Marshall McLuhan," The Biography Channel website, http://www.biography.com/people/marshall-mcluhan-9393821 (accessed May 21, 2013).
Marshall McLuhan [Internet]. The Biography Channel website; 2013 [cited 2013 May 21] Available from: http://www.biography.com/people/marshall-mcluhan-9393821.
Marshall McLuhan, http://www.biography.com/people/marshall-mcluhan-9393821 (last visited May 21, 2013).
Marshall McLuhan. The Biography Channel website. 2013. Available at: http://www.biography.com/people/marshall-mcluhan-9393821. Accessed May 21, 2013.