Stone Douglas, Heen, S., & Patton Bruce. (1999). Difficult conversations: How to discuss what matters most. Penguin Books.
Style de citation Chicago (17e éd.)Stone Douglas, Sheila Heen, et Patton Bruce. Difficult Conversations: How to Discuss What Matters Most. New York: Penguin Books, 1999.
Style de citation MLA (9e éd.)Stone Douglas, et al. Difficult Conversations: How to Discuss What Matters Most. Penguin Books, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.