Goldman, Eric; Iverson, Dan & Zoromski, Brian (January 4, 2010). "Top 25 Simpsons Guest Appearance". IGN. Archived from the original on June 22, 2007. Retrieved January 23, 2022.
Goldman, Eric; Iverson, Dan & Zoromski, Brian (January 4, 2010). "Top 25 Simpsons Guest Appearance". IGN. Archived from the original on June 22, 2007. Retrieved January 23, 2022.