Παραπομπή σε μορφή APA (7η εκδ.)

Stone Douglas, Heen, S., & Patton Bruce. (1999). Difficult conversations: How to discuss what matters most. Penguin Books.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Stone Douglas, Sheila Heen, και Patton Bruce. Difficult Conversations: How to Discuss What Matters Most. New York: Penguin Books, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

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