What Is and What Should Never Be/Bibliography

This is a bibliography of major works on "What Is and What Should Never Be".


 * Lewis, Dave (1994) The Complete Guide to the Music of Led Zeppelin. London: Omnibus Press. ISBN 0-7119-3528-9 (LCCN 95209443).
 * Welch, Chris (1998) Led Zeppelin: Dazed and Confused: the Stories Behind Every Song. New York, NY: Thunder’s Mouth Press. ISBN 1-56025-188-3 (LCCN 99162491).