Credo Reference This link opens in a new windowCredo Reference presents content from hundreds of reference books from some of the world's best reference publishers. Credo contains dictionaries, bilingual dictionaries, thesauri, subject encyclopedias, quotations and atlases, plus a wide range of subject-specific titles covering everything from art to accountancy to zoology, science to Shakespeare, and law to literature. There are over 3 million entries, 65,000+ images (art, diagrams, interactive maps and photos).