APA (7th ed.) Citation

Stone, D., Heen, S., & Patton, B. (2010). Difficult conversations : how to discuss what matters most / Douglas Stone, Bruce Patton, Sheila Heen ; [with a foreword by Roger Fisher]: How to discuss what matters most (10th anniversary ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Stone, Douglas, Sheila Heen, and Bruce Patton. Difficult Conversations : How to Discuss What Matters Most / Douglas Stone, Bruce Patton, Sheila Heen ; [with a Foreword by Roger Fisher]: How to Discuss What Matters Most. 10th anniversary ed. New York, NY: Penguin Books, 2010.

MLA (9th ed.) Citation

Stone, Douglas, et al. Difficult Conversations : How to Discuss What Matters Most / Douglas Stone, Bruce Patton, Sheila Heen ; [with a Foreword by Roger Fisher]: How to Discuss What Matters Most. 10th anniversary ed. Penguin Books, 2010.

Warning: These citations may not always be 100% accurate.