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Often overlooked, Reference Sources can offer:
1) An overview of your potential topic,
2) Clarity about the contours and sub-divisions of an intellectual question,
3) Citations to important sources, hand-chosen by the author.
Credo Reference This link opens in a new window
An interdisciplinary research tool that allows you to search over 300 reference works simultaneously, including limiting to audio or visual materials.
Specialized Reference Sources
Philosophy of Biology/Science
Philosophy of Ethics/Bioethics
Political & Legal Theory Philosophy