It's easy to cite LitCharts for use in academic papers and reports.
MLA
Levine, Yael. "Northanger Abbey." LitCharts. LitCharts LLC, 2 May 2017. Web. 22 Sep 2020.
Chicago
Levine, Yael. "Northanger Abbey." LitCharts LLC, May 2, 2017. Retrieved September 22, 2020. https://www.litcharts.com/lit/northanger-abbey.