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. 3 Mar 2021.
Chicago
Parfitt, Georgina. "The Picture of Dorian Gray." LitCharts LLC, September 17, 2013. Retrieved March 3, 2021. https://www.litcharts.com/lit/the-picture-of-dorian-gray.