Michael Spivey and Steven Knowlton, «Anti-Heroismin the Continuum of Good and Evil», in The Psychology of Super-heroes: An Unauthorized Exploration, eds. Robin S. Rosenberg and Jennifer Canzoneri (Dallas: Ben Bella Books, 2008), 51–64; Chuck Tate, «An Appetite for Destruction: Aggression and the Batman», in The Psychology of Superheroes: An Unauthorized Exploration, eds. Robin S. Rosenberg and Jennifer Canzoneri (Dallas: Ben Bella Books, 2008), 135–146.