Allen v. Woodford. FindLaw.com. http://caselaw.findlaw.com/us-9th-circuit/1050550.html.
Ardaiz, James A. Hands Through Stone: How Clarence Ray Allen Masterminded Murder from Behind Folsom’s Prison Walls. Craven Street Books. 2012.
“Clarence Allen.” The Malefactor’s Register. http://www.markgribben.com/?page_id=113. 9/22/2005.
“Clarence Ray Allen Executed.” Associated Press. http://abclocal.go.com/kfsn/story?section=news/local&id=3814629. January 17, 2006.
Doyle, Jim. “Double life of a Death Row killer/Charismatic multiple murderer Clarence Ray Allen, 75, didn’t turn really bad until his 40s.” San Francisco Chronicle. January 12, 2006.
“Governor Schwarzenegger Denies Clemency To Convicted Murderer Clarence Ray Allen.” Office of Governor. http://gov.ca.gov/news.php?id=317.