Petrarch was an Italian scholar, poet and Renaissance humanist whose writings are best known for creating the model for the modern Italian language.
Petrarch. (2013). The Biography Channel website. Retrieved 02:52, May 20, 2013, from http://www.biography.com/people/petrarch-9438891.
Petrarch. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/petrarch-9438891 [Accessed 20 May 2013].
"Petrarch." 2013. The Biography Channel website. May 20 2013, 02:52 http://www.biography.com/people/petrarch-9438891.
"Petrarch," The Biography Channel website, 2013, http://www.biography.com/people/petrarch-9438891 [accessed May 20, 2013].
"Petrarch," The Biography Channel website, http://www.biography.com/people/petrarch-9438891 (accessed May 20, 2013).
Petrarch [Internet]. The Biography Channel website; 2013 [cited 2013 May 20] Available from: http://www.biography.com/people/petrarch-9438891.
Petrarch, http://www.biography.com/people/petrarch-9438891 (last visited May 20, 2013).
Petrarch. The Biography Channel website. 2013. Available at: http://www.biography.com/people/petrarch-9438891. Accessed May 20, 2013.