Cita APA (7a ed.)

Campbell, D., & Hale, R. (2017). Working in the dark: Understanding the pre-suicide state of mind. Routledge.

Cita Chicago Style (17a ed.)

Campbell, Donald, y Robert Hale. Working in the Dark: Understanding the Pre-suicide State of Mind. London New York: Routledge, 2017.

Cita MLA (9a ed.)

Campbell, Donald, y Robert Hale. Working in the Dark: Understanding the Pre-suicide State of Mind. Routledge, 2017.