Where will i find Andre dubus's short story the killings?

You can find "Killings" in Andre Dubus: Selected Stories. Vintage Contemporaries, 1996. It is also anthologized in In the Bedroom: Seven Stories by Andre Dubus. Vintage Contemporaries, 2002. This later edition had a Preface by Todd Field, the director of the film In the Bedroom, based on "Killings."