"Ego the Living Planet Voices (Thor)". Behind The Voice Actors. Retrieved December 23, 2019. A green check mark indicates that a role has been confirmed using a screenshot (or collage of screenshots) of a title's list of voice actors and their respective characters found in its credits or other reliable sources of information.{{cite web}}: CS1 maint: postscript (link)
books.google.com
Flubb, J.A. "The Great Kirby Science Fiction Concepts". Jack Kirby Collector (15): 4–9. Reprinted in Morrow, John, ed. (1999). The Collected Jack Kirby Collector, Volume 3. TwoMorrows Publishing. pp. 132–133. ISBN1-893905-02-0.
