The Satanic Rituals by Anton Szandor LaVey
Mass market paperback format.
The companion to The Satanic Bible, written by Anton LaVey in 1969. It is a collection of essays, observations and basic Satanic rituals, and outlines LaVey's Satanic ideology. It contains the core principles of LaVeyan Satanism and is considered the foundation of the philosophy and dogma that constitute Satanism.