The Giver by Lois LowryHarry Potter and the Philosopher's Stone by J.K. RowlingTo Kill a Mockingbird by Harper LeeThe Fault in Our Stars by John  Green
Best Young Adult Books
13,023 books — 80,511 voters
The Great Gatsby by F. Scott Fitzgerald1984 by George OrwellSlaughterhouse-Five by Kurt Vonnegut Jr.
Best Books of the 20th Century
7,801 books — 49,899 voters

To Kill a Mockingbird by Harper LeeThe Great Gatsby by F. Scott FitzgeraldSlaughterhouse-Five by Kurt Vonnegut Jr.Catch-22 by Joseph HellerThe Giving Tree by Shel Silverstein
Books That Everyone Should Read At Least Once
33,249 books — 126,141 voters