Samuel Johnson, often referred to as Dr. Johnson, was an English writer who notably produced the Dictionary of the English Language, published in 1755.
Samuel Johnson. (2013). The Biography Channel website. Retrieved 12:53, May 22, 2013, from http://www.biography.com/people/samuel-johnson-37037.
Samuel Johnson. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/samuel-johnson-37037 [Accessed 22 May 2013].
"Samuel Johnson." 2013. The Biography Channel website. May 22 2013, 12:53 http://www.biography.com/people/samuel-johnson-37037.
"Samuel Johnson," The Biography Channel website, 2013, http://www.biography.com/people/samuel-johnson-37037 [accessed May 22, 2013].
"Samuel Johnson," The Biography Channel website, http://www.biography.com/people/samuel-johnson-37037 (accessed May 22, 2013).
Samuel Johnson [Internet]. The Biography Channel website; 2013 [cited 2013 May 22] Available from: http://www.biography.com/people/samuel-johnson-37037.
Samuel Johnson, http://www.biography.com/people/samuel-johnson-37037 (last visited May 22, 2013).
Samuel Johnson. The Biography Channel website. 2013. Available at: http://www.biography.com/people/samuel-johnson-37037. Accessed May 22, 2013.