Referencia Excelente de Margo-rita!
Kokomo Library Reference Sites
Research-It!-Your one-stop reference desk
The Internet Public Library
Library of Congress
Ask Jeeves
How Stuff Works
French-at-a-touch.com
The Phrase Finder
The Quotations Page
Internet Movie Database Quotes
Encycopedia Mythica
Wikipedia
Webster's Online Dictionary
Thomas Register of American Manufacturers