It's easy to cite LitCharts for use in academic papers and reports.
MLA
Cao, Diana. "O Pioneers!." LitCharts. LitCharts LLC, 1 Feb 2014. Web. 10 Jul 2020.
Chicago
Cao, Diana. "O Pioneers!." LitCharts LLC, February 1, 2014. Retrieved July 10, 2020. https://www.litcharts.com/lit/o-pioneers.