McAvennie, Michael; Dolan, Hannah, ed. (2010). «1970s». DC Comics Year By Year A Visual Chronicle. London, United Kingdom: Dorling Kindersley. p. 145. ISBN978-0-7566-6742-9. «As the writer, artist, and editor of the Fourth World family of interlocking titles, each of which possessed its own distinct tone and theme, Jack Kirby cemented his legacy as a pioneer of grand-scale storytelling.»
