"Company History". Hachette Company. Archived from the original on March 1, 2019. Retrieved June 6, 2012.
"FAQsArchived 2011-04-11 at the Wayback Machine." Hachette Book Group. Retrieved April 17, 2011. "Hachette Book Group Marketing Department 237 Park Avenue New York, NY 10017".
"About Us". Hachette Company. June 28, 2017. Archived from the original on August 16, 2017. Retrieved September 18, 2017.
"Copyrights of Golden-Age Comics". Golden-Age Comic book Superheroes & Villains Encyclopedia. Archived from the original on September 21, 2011. Retrieved September 20, 2011.
ninamunk.com
"Power Failure". VANITY FAIR. July 2002. Archived from the original on July 14, 2011. Retrieved October 7, 2011.
"Company History". Hachette Company. Archived from the original on March 1, 2019. Retrieved June 6, 2012.
"FAQsArchived 2011-04-11 at the Wayback Machine." Hachette Book Group. Retrieved April 17, 2011. "Hachette Book Group Marketing Department 237 Park Avenue New York, NY 10017".
"Copyrights of Golden-Age Comics". Golden-Age Comic book Superheroes & Villains Encyclopedia. Archived from the original on September 21, 2011. Retrieved September 20, 2011.