Langston Hughes, Dolan Hubbard, Leslie Catherine Sanders (2001). “The Collected Works of Langston Hughes: Works for children and young adults: poetry, fiction, and other writing”, p.81, University of Missouri Press
"Olga Kurylenko Talks OBLIVION, Flying the Bubbleship, How Her Bond Experience Helped Her with Action, and More". Interview with Sheila Roberts, collider.com. April 13, 2013.