For Classic Dispensationalism try: Most anything by Mal Couch or JN Darby, Scofield et al
For Revised Dispensationalism: Lewis Sperry Chafer resiources available from wikipedia http://en.wikipedia.org/wiki/Lewis_Sperry_Chafer
For Modified Dispensationalism: Dispensationalism by Charles C. Ryrie
For Progressive Dispensationalism: Progressive Dispensationalism by Darrel Bock and Craig Blaising

Of course like most any heresy you are better off simply avaoiding it and learning the truth instead

[Edited on 6-28-2006 by Hungus]

__________________
Robert K. "Kelly" Brumbelow
Soon to be at Christ Covenant - Mansfield
University of Texas at Arlington - Pre-Professional Philosophy
Arlington, Texas

Dear Lord and Father of mankind, Forgive our foolish ways;
Reclothe us in our rightful mind, In purer lives Thy service find,
In deeper reverence, praise.