It's easy to cite LitCharts for use in academic papers and reports.
Cao, Diana. "Cat on a Hot Tin Roof." <em>LitCharts.</em> LitCharts LLC, 26 Nov 2013. Web. 23 Jan 2017.
Cao, Diana. "<em>Cat on a Hot Tin Roof</em>." LitCharts LLC, November 26, 2013. Retrieved January 23, 2017. http://www.litcharts.com/lit/cat-on-a-hot-tin-roof.