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.
Style de citation Chicago (17e éd.)Van der Hart, Will, et Rob Waller. The End of Worry: Why We Worry and How to Stop. 1st Howard Books trade pbk. ed. New York: Howard Books, 2013.
Style de citation MLA (8e éd.)Van der Hart, Will, et Rob Waller. The End of Worry: Why We Worry and How to Stop. 1st Howard Books trade pbk. ed. Howard Books, 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.