- David Grann. The Lost City of Z: A Tale of Deadly Obsession in the Amazon. New York, NY: Doubleday, 2009.
- Allison Herrera. "'Of course we should be here': 'Flower Moon' receives a 9-minute ovation at Cannes." NPR. May 24, 2023. Jun. 15, 2023. <https://www.npr.org/2023/05/23/1177713781/killers-of-the-flower-moon-osage-scorsese>.
- Zack Sharf. "‘Killers of the Flower Moon’ Is Far Different From Scorsese’s Original Plan — Thanks to the Osage Nation, Says Lily Gladstone." Variety. Jan. 20, 2023. Jun. 15, 2023. <https://variety.com/2023/film/news/killers-of-the-flower-moon-osage-nation-changed-scorsese-vision-lily-gladstone-1235496848/>.
- "About David Grann." David Grann. Jun. 15, 2023. <https://www.davidgrann.com/about/>.
- Jennifer Maupin. "'We don't live like victims': Henry Roan's great-grandson talks 'Killers of the Flower Moon' concerns." 2 News Oklahoma. May 24, 2023. Jun. 15, 2023. <https://www.kjrh.com/news/local-news/we-dont-live-like-victims-henry-roans-great-grandson-talks-killers-of-the-flower-moon-concerns>.
- David Rooney. "‘Killers of the Flower Moon’ Review: Leonardo DiCaprio and Lily Gladstone Lead Martin Scorsese’s Searing True-Crime Epic." The Hollywood Reporter. May 20, 2023. Jun. 15, 2023. <https://www.hollywoodreporter.com/movies/movie-reviews/killers-of-the-flower-moon-review-leonardo-dicaprio-lily-gladstone-robert-de-niro-martin-scorsese-1235496646/>.
- Dave Eggers. "February’s Book Club Pick: ‘Killers of the Flower Moon,’ by David Grann." The New York Times. Apr. 28, 2017. Jun. 15, 2023. <https://www.nytimes.com/2017/04/28/books/review/killers-of-the-flower-moon-david-grann.html>.