List of DC Universe locations (English Wikipedia)

Callahan, Timothy; Chad Nevett (August 29, 2008). "Final Crisis: Superman Beyond #1: The What is the Space What Now?". The Splash Page. Sequart Research & Literacy Organization. Archived from the original on August 30, 2009. Retrieved September 3, 2008.

aiptcomics.com

Franey, Christopher (October 16, 2024). "Green Lantern #16 review". AIPT Comics. Retrieved November 29, 2024.

Rumsey, Myron (August 16, 2009). "Green Lantern: First Flight Review". The Blog of Oa. Retrieved September 20, 2024.

Callahan, Timothy (May 2007). Grant Morrison: The Early Years. Sequart Research & Literacy Organization. p. 112. ISBN 978-0-615-14087-2. Retrieved October 25, 2010. Comic Book Limbo, as a metaphorical idea, has been around as long as comic books have been around. Any character who hasn't appeared for a while could be said to exist in 'Comic Book Limbo'. Morrison takes that concept and turns it into an actual place.

Burlingame, Russ (July 8, 2023). "New Blue Beetle Poster Teases Big Belly Burger". Comicbook.com. Archived from the original on September 15, 2023. Retrieved December 23, 2024.
Burlingame, Russ (8 August 2023). "New Blue Beetle Poster Teases Big Belly Burger". comicbook.com.

"Green Lantern: First Flight Review". Comic Book Jesus. August 2, 2009. Retrieved September 20, 2024.

Carlson, KC (July 28, 2009). "Green Lantern: First Flight". Comics Worth Reading. Retrieved September 20, 2024.

Rucka, Greg (August 14, 2009). "Adventures of Superman | Greg Rucka". Archived from the original on 2009-08-14. Retrieved April 19, 2024.

Schleicher, Stephen (April 15, 2015). "FLASHBACK: All Star Team Up (s01e18)". Major Spoilers. Retrieved June 10, 2021.

Burlingame, Russ (July 8, 2023). "New Blue Beetle Poster Teases Big Belly Burger". Comicbook.com. Archived from the original on September 15, 2023. Retrieved December 23, 2024.
Rucka, Greg (August 14, 2009). "Adventures of Superman | Greg Rucka". Archived from the original on 2009-08-14. Retrieved April 19, 2024.
Callahan, Timothy; Chad Nevett (August 29, 2008). "Final Crisis: Superman Beyond #1: The What is the Space What Now?". The Splash Page. Sequart Research & Literacy Organization. Archived from the original on August 30, 2009. Retrieved September 3, 2008.