[1973] The Ones Who Walk Away from Omelas

Research References
1 
@book{guin2017ones,
  title={The Ones Who Walk Away from Omelas: A Story},
  author={Guin, U.K.L.},
  isbn={9780062470973},
  series={A Wind's Twelve Quarters Story},
  url={https://books.google.co.cr/books?id=fZayDQAAQBAJ},
  year={2017},
  publisher={HarperCollins}
}

In openlibrary.

2

My highlights: https://archive.org/download/elopio-stories/ursula_k_leguin-omelas.pdf