Encyclopedias

ENCYCLOPEDIAS AT NET
Encyclopedia Britannica	One of the worlds leading encyclopedias, always updated.
Encyclopedia of Islam
Oxford Reference Online	125 reference works from Oxford University Press gathered in one single and useful database.
The Catholic Encyclopedia	A bit old, but still useful catholic referense work.
ENCYCLOPEDIAS IN PRINT
The Anchor Bible Dictionary	Probably the best biblical encyclopedia (6 vols, 1992).
The Brill Dictionary of Religion	A good reference work on religion in general (4 vols, 2007)
The Encyclopedia of Christianity	English translation of a German encyclopedia on protestant history and theology (5 vols, 1998-2008).
The Encyclopedia of Religion	A standard reference work by Mircea Eliade on religions and religious phenomenas (16 vols, 1993).
Lexikon für Theologie und Kirche	Important German catholic encyclopedia (12 vols, 1993-2001).
New Catholic Encyclopedia	The most important English catholic encyclopedia (15 vols, 2003, 2. ed.).
Theologische Realenzyklopädie	The leading protestant encyclopedia, in German (36 vols, 1997-2007).