APA

Stone D., Patton B. & Heen S. (1999). Difficult conversations: how to discuss what matters most. New York, N.Y: Viking.

Chicago

Stone Douglas, Patton Bruce and Heen Sheila. 1999. Difficult conversations: how to discuss what matters most. New York, N.Y: Viking.

Harvard

Stone D., Patton B. and Heen S. (1999). Difficult conversations: how to discuss what matters most. New York, N.Y: Viking.

MLA

Stone Douglas, Patton Bruce and Heen Sheila. Difficult conversations: how to discuss what matters most. New York, N.Y: Viking. 1999.