It's easy to cite LitCharts for use in academic papers and reports.
MLA
Archibald, Georgie. "The Portrait of a Lady." LitCharts. LitCharts LLC, 23 Feb 2019. Web. 2 Mar 2021.
Chicago
Archibald, Georgie. "The Portrait of a Lady." LitCharts LLC, February 23, 2019. Retrieved March 2, 2021. https://www.litcharts.com/lit/the-portrait-of-a-lady.