It's easy to cite LitCharts for use in academic papers and reports.
MLA
Houghton, Eve. "The Last Leaf." LitCharts. LitCharts LLC, 7 Nov 2017. Web. 19 Sep 2020.
Chicago
Houghton, Eve. "The Last Leaf." LitCharts LLC, November 7, 2017. Retrieved September 19, 2020. https://www.litcharts.com/lit/the-last-leaf.