Michael McAvennie e Hannah, ed. Dolan, 1970s, in DC Comics Year By Year: A Visual Chronicle, London, United Kingdom, Dorling Kindersley, 2010, p. 145, ISBN 978-0-7566-6742-9.
«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.»
