- IPL2: Internet Public Library
- Reference
- iTools
- Virtual Reference Shelf
- Library of Congress' Alcove 9
- RefDesk.com
- Reference Works
- Best Information on the Net
- Digital Librarian: Reference
- E-Reference Links
- Electronic Reference Sources
- Gulf Coast Community College Library's Suggested Internet Links
- LibrarySpot
- Martindale's The Reference Desk
- Martindale's Calculators On-Line Center
- Quick Reference
- ReferenceDesk.org
- Reference Tool Surveys
- Stony Brook University Libraries: Research Websites
- UC San Diego Libraries Reference Shelf
- University of Colorado, Boulder
- Useful Reference Sites
- Virtual Reference Collection
- Yahoo Reference
- Reference in the Yahoo Directory
- Research Strategy
Reference Desk Websites - Most Popular
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