It's easy to cite LitCharts for use in academic papers and reports.
MLA
Tanner, Alexandra. "Charlotte’s Web." LitCharts. LitCharts LLC, 7 Mar 2019. Web. 19 Apr 2021.
Chicago
Tanner, Alexandra. "Charlotte’s Web." LitCharts LLC, March 7, 2019. Retrieved April 19, 2021. https://www.litcharts.com/lit/charlotte-s-web.