An English-language reference source for philosophy. The second edition, integrates most of the 1967 and 1996 material with hundreds of new articles, addenda to earlier articles, and updated bibliographies. It includes more than 2,100 articles ranging from individual thinkers to concepts and branches of philosophy.
The Cambridge dictionary of philosophy by 
A concise encyclopedia of the philosophy of religion by 
Title Encyclopedia of classical philosophy by 
Encyclopedia of ethics by 
Routledge encyclopedia of philosophy by 
