Cita APA (7a ed.)

Van der Hart, W., & Waller, R. (2013). The end of worry: Why we worry and how to stop (1st Howard Books trade pbk. ed.). Howard Books.

Cita Chicago Style (17a ed.)

Van der Hart, Will, y Rob Waller. The End of Worry: Why We Worry and How to Stop. 1st Howard Books trade pbk. ed. New York: Howard Books, 2013.

Cita MLA (8a ed.)

Van der Hart, Will, y Rob Waller. The End of Worry: Why We Worry and How to Stop. 1st Howard Books trade pbk. ed. Howard Books, 2013.

Precaución: Estas citas no son 100% exactas.