It's easy to cite LitCharts for use in academic papers and reports.
MLA
Reges, Margaret. "The Diary of Anne Frank." LitCharts. LitCharts LLC, 5 Jan 2014. Web. 9 Jul 2020.
Chicago
Reges, Margaret. "The Diary of Anne Frank." LitCharts LLC, January 5, 2014. Retrieved July 9, 2020. https://www.litcharts.com/lit/the-diary-of-anne-frank.