All of his treatments were "straight" adaptations, far closer to the original source novel than the spoof which the final production became.

Many of the characters that appeared in the source novel do not appear in the film.

At the time the film was made, the source novel by Fogle was unpublished.

The source novel is written by Lyndon while imprisoned looking back on his life.

Barry Lyndon departs from its source novel in several ways.

This portrayal is more in keeping with King's original source novel.

The film draws predominantly from the Dassin film rather than the source novel.

Perhaps that's no surprise, given the source novel.

Although generally the same story, the television adaptation takes several liberties with King's source novel.

Battlefield Earth is significantly shorter than its source novel, covering only the first 436 pages of the 1,050-page book.