Cita APA (7th ed.)

Stone, D., Heen, S., & Patton, B. (1999). Difficult conversations: How to discuss what matters most. Viking/Penguine Books.

Cita Chicago (17th ed.)

Stone, Douglas, Sheila Heen, i Bruce Patton. Difficult Conversations: How to Discuss What Matters Most. London: Viking/Penguine Books, 1999.

Cita MLA (9th ed.)

Stone, Douglas, et al. Difficult Conversations: How to Discuss What Matters Most. Viking/Penguine Books, 1999.