Wikipedia - Did you know that Wikipedia isn't the only 'wiki' out there? Wikisource hosts books and other full-text items, all of which are completely free of charge. For example, this is
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Creation and Publication of the Red Book - The Red Book of Carl G. Jung: Its Origins and Influence | Exhibitions - Library of Congress
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Wiki: Web Collaboration: Ebersbach, Anja, Glaser, Markus, Heigl, Richard: 9783540259954: Amazon.com: Books
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Leadership in a Wiki World: Leveraging Collective Knowledge To Make the Leap To Extraordinary Performance: Collins, Rod: 9781608444663: Amazon.com: Books
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