- Eugene O'Neill. Long Day's Journey Into Night (Critical Edition). New Haven, CT: Yale University Press, 1956.
- Renee Calarco. "Eugene O'Neill + Long Day's Journey Into Night ." The Kennedy Center. October 19. 4/20/2021. <https://www.kennedy-center.org/education/resources-for-educators/classroom-resources/media-and-interactives/media/theater/eugene-oneill--long-days-journey-into-night/>.
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