Quotations
Wikiquote
Wikiquote is a collaboratively edited collection of quotations. Visitors can browse entries by subject or author and explore references associated with quoted materi...
Directory category
Reference
Explore websites and online resources about Reference. Browse relevant businesses, services, guides, communities, and information organized in the einternetindex.com directory.
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Websites in Reference
Questions & Answers
The Straight Dope
The Straight Dope publishes explanations of questions about science, history and everyday life. Readers can explore its article archive and community discussions.
Questions & Answers
Answers
Answers provides a question and answer website covering many subjects. Visitors can browse explanations and contribute to discussions about educational and everyday...
Questions & Answers
Quora
Quora provides a platform for asking questions and sharing answers. Visitors can explore discussions and perspectives on a wide range of topics.
Questions & Answers
Stack Overflow
Stack Overflow provides a question and answer community for programmers. Developers can browse technical discussions and contribute questions and explanations about...
Questions & Answers
Stack Exchange
Stack Exchange hosts topic-based question and answer communities. Visitors can browse discussions and share knowledge across subjects including science, technology a...
Medical
National Library of Medicine
The National Library of Medicine provides access to biomedical information resources. Visitors can explore literature databases, digital collections and tools for he...
Medical
BMJ Best Practice
BMJ Best Practice provides clinical reference information for healthcare professionals. Its website introduces decision-support resources covering the assessment and...
Medical
Merck Manuals
Merck Manuals provides medical reference material for professionals and consumers. Its website offers explanations of medical conditions and related educational reso...
Medical
MedlinePlus
MedlinePlus provides consumer health information from the US National Library of Medicine. Visitors can explore health topics, medical tests and information about me...
Ask an Expert
MadSci Network
The MadSci Network provides an archive of science questions and answers. Readers can explore explanations across scientific subjects and browse earlier contributions...
Ask an Expert
Ask an Astronomer
Ask an Astronomer shares answers to astronomy questions from Cornell volunteers. Visitors can browse explanations about planets, stars, galaxies and the universe.
Ask an Expert
Ask a Biologist
Ask a Biologist provides educational resources from Arizona State University. Visitors can explore biology questions, articles and activities for learning about livi...
Ask an Expert
Ask Extension
Ask Extension provides a place to submit questions to university extension experts. Visitors can browse answers about gardening, agriculture and other practical topi...
Ask an Expert
Ask a Librarian - Library of Congress
Ask a Librarian connects visitors with Library of Congress reference staff. Its website provides a way to request research assistance and browse answers to common qu...
Technology
Association for Computing Machinery
The Association for Computing Machinery connects computing researchers and professionals. Its website includes publications, educational resources and information ab...
Technology
IEEE
IEEE provides professional and educational resources in engineering and technology. Visitors can explore publications, standards activities and information about tec...