What does this Works Cited entry indicate about the cited work?
It's a Wonderful Life. Dir. Frank Capra. Perf. James Stewart, Donna Reed, Lionel Barrymore, and Thomas Mitchell. RKO, 1946. Film.

 - It is a web page.
 - It is a movie.
 - It is a book.
Look closely at the Works Cited entry:
It's a Wonderful Life. Dir. Frank Capra. Perf. James Stewart, Donna Reed, Lionel Barrymore, and Thomas Mitchell. RKO, 1946. Film.
You can tell that the cited work is a movie because "Film" is listed as the medium of publication.