It's easy to cite LitCharts for use in academic papers and reports.
MLA
Tanner, Alexandra. "I for Isobel." LitCharts. LitCharts LLC, 30 Jun 2018. Web. 25 Sep 2020.
Chicago
Tanner, Alexandra. "I for Isobel." LitCharts LLC, June 30, 2018. Retrieved September 25, 2020. https://www.litcharts.com/lit/i-for-isobel.