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Line 12: [[International Data Group\|IDG Books]] purchased CliffsNotes in 1998 for $14.2 million. [[Wiley (publisher)\|John Wiley & Sons]] acquired IDG Books (renamed Hungry Minds) in 2001. In 2011, CliffsNotes announced a joint venture with [[Mark Burnett]], a TV producer. This would be a series of 60-second video [[study guide]]s of literary works.<ref name=marketplace>{{Cite web\|title=CliffsNotes Goes Digital\|url=http://marketplace.publicradio.org/display/web/2011/03/10/pm-cliffsnotes-goes-digital//\|access-date=March 10, 2011\|publisher=American Public Radio\|archive-url=https://web.archive.org/web/20110727192539/http://marketplace.publicradio.org/display/web/2011/03/10/pm-cliffsnotes-goes-digital//\|archive-date=July 27, 2011\|url-status=dead}}</ref> In 2012, CliffsNotes was acquired by [[Houghton Mifflin Harcourt]].<ref name=about>{{Cite web\|title=About CliffsNotes\|url=https://www.cliffsnotes.com/discover-about\|website=CliffsNotes\|access-date=June 20, 2015}}</ref> In 2021, CliffsNotes was acquired by [[Course Hero]].<ref>{{Cite web\|title=Online education unicorn Course Hero buys CliffsNotes\|publisher=Silicon Valley Business Journal\|access-date=August 21, 2021\|url=https://www.bizjournals.com/sanjose/news/2021/08/19/course-hero-buys-cliffsnotes.html}}</ref> ~~== Other guides ==~~ ~~In addition to guides for literature, the company produces several other series of guides, including:~~ CliffsQuickReview: A quick reference for information on scholastic subjects, such as sciences, mathematics, and history. CliffsComplete: Similar to regular CliffsNotes, but also includes notes and commentary. CliffsAP: Advanced placement study guides, including action plans, test-taking strategies, reviews, and exercises. CliffsStudySolver: A learn-by-mastering approach to algebra, Spanish, grammar, and other subjects. CliffsTestPrep: Test preparation guides for the LSAT, SATs, GED, and other tests. Shakespeare on the Double!: The original Shakespeare text side-by-side with a contemporary English version. *The Manga Editions: Based on the traditional manga format. == See also ==

CliffsNotes: Difference between revisions