It's easy to cite LitCharts for use in academic papers and reports.
MLA
Parfitt, Georgina. "The Picture of Dorian Gray." LitCharts. LitCharts LLC, 17 Sep 2013. Web. 26 May 2020.
Chicago
Parfitt, Georgina. "The Picture of Dorian Gray." LitCharts LLC, September 17, 2013. Retrieved May 26, 2020. https://www.litcharts.com/lit/the-picture-of-dorian-gray.