Jen Hunt (October 8, 2006). "Undertaker shows No Mercy on Kennedy". World Wrestling Entertainment. Archived from the original on October 9, 2016. Retrieved February 10, 2008. Tombstoned referee Charles Robinson for disqualifying him
Passero, Mitch (June 20, 2008). "Spear of influence". World Wrestling Entertainment. Archived from the original on July 15, 2008. Retrieved July 15, 2008.
DiFino, Lennie (July 11, 2008). "Endless Love". World Wrestling Entertainment. Archived from the original on August 8, 2008. Retrieved August 8, 2008.
"Bio". WWE. Archived from the original on December 20, 2008. Retrieved October 3, 2008.
Jen Hunt (October 8, 2006). "Undertaker shows No Mercy on Kennedy". World Wrestling Entertainment. Archived from the original on October 9, 2016. Retrieved February 10, 2008. Tombstoned referee Charles Robinson for disqualifying him
Passero, Mitch (June 20, 2008). "Spear of influence". World Wrestling Entertainment. Archived from the original on July 15, 2008. Retrieved July 15, 2008.
DiFino, Lennie (July 11, 2008). "Endless Love". World Wrestling Entertainment. Archived from the original on August 8, 2008. Retrieved August 8, 2008.