Great Expectations
From Tardis Wiki, the free Doctor Who reference
Great Expectations was a novel by Charles Dickens that the Ninth Doctor identified on Christmas Eve 1869. (TV: The Unquiet Dead)
Rani Chandra and Clyde Langer had to read the book for school. Typically, Rani took the assignment far more seriously than Clyde. He claimed that all one needed to do to understand the novel sufficiently for the purposes of school was to skim it and read page 73. (TV: The Empty Planet)