* Danville, E., and Mott, C., "The Official Heavy Metal Book of Lists" (Fayetteville, AR: University of Arkansas Press, 2009), ISBN 0-87930-983-0.
* Danville, E., and Mott, C., "The Official Heavy Metal Book of Lists" (Fayetteville, AR: University of Arkansas Press, 2009), ISBN 0-87930-983-0.