Purcell, Natalie J.. 1, Death Metal Music: The Passion and Politics of a Subculture. McFarland & Company, 12. o. [2003]. ISBN 0786415851. Hozzáférés ideje: 2007. június 1. „A good Death Metal song will keep the listener to the edge of his seat while the song twists and turns through numerous time changes and scale patterns - John Gallagher, Dying Fetus”
