Screenwriting, also called script-writing is the art and craft of writing scripts for mass media such as feature films, television productions or video games. It is frequently a freelance profession.

Screenwriting
Screenwriting
Screenwriting
Screenwriting Poetics and the Screen Idea
Screenwriting: History, Theory and Practice
Narrative Screenwriting for Educational Television: a framework
Screenplay : the foundations of screenwriting
Theory and technique of playwriting and screenwriting
The tools of screenwriting : a writer's guide to the craft and elements of a screenplay
Story : substance, structure, style and the principles of screenwriting
Story: Style, Structure, Substance, and the Principles of Screenwriting
Storytelling that moves people. A conversation with screenwriting coach Robert McKee.
Adventures in the screen trade : a personal view of Hollywood and screenwriting