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General & Interdisciplinary Research Guide: Reference Sources

Research Guide for all general or interdisciplinary topics

Why Use Reference Books?

Reference sources provide background information, an overview of a topic, specialized vocabulary and terminology, and critical concepts.  They're often a great starting point.  The Library has reference materials both online and in print.

Want more information? 

  • Contact the Reference/Information Desk on the Main Level of Ryan Library (619) 849-2337
  • Chat with us in chat box on right
  • Text us at (619) 592-8884
  • Email us 

Examples of Reference Sources

Ryan Library has thousands of subject encyclopedia.  Here are just a few examples:

Ask a Librarian

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You can also connect via text message at 619-592-8884 or by email.