A friend claims that his father said that the movie The Warriors (1979) was based on a book.
Can anyone substantiate that?
The movie is loosely based on The Warriors (1965) by Sol Yurick.
It features a significantly younger protagonist (he's 12-14 if I recall) rather than the late teen / early 20's actors in the movie.
The Warriors is a novel written by Sol Yurick and Illustrated by Frank Modell in 1965. It became the inspiration for the cult classic movie The Warriors. Compared to the movie, the novel takes a closer look at the concepts of sexuality, reputation, family, and survival.