It's easy to cite LitCharts for use in academic papers and reports.
MLA
Dillon, Sophie. "The Ones Who Walk Away from Omelas." LitCharts. LitCharts LLC, 28 Feb 2018. Web. 19 Jun 2021.
Chicago
Dillon, Sophie. "The Ones Who Walk Away from Omelas." LitCharts LLC, February 28, 2018. Retrieved June 19, 2021. https://www.litcharts.com/lit/the-ones-who-walk-away-from-omelas.