E.T.: The Book of the Green Planet is a 1985 novel by William Kotzwinkle that continues the events of the movie. In it, E.T. has returned home, but finds many things have changed. He continues to observe Elliott from across the galaxy, but finds that Elliott is also changing. E.T. decides to return to Earth by breaking all of his planet's laws.
- Amazon.com page (ISBN #0743216407)