Stone, Douglas, 1958- Difficult conversations : how to discuss what matters most / Douglas Stone, Bruce Patton, Sheila Heen. - New York, N.Y. : Viking, 1999. - xxi, 250 p. : ill. ; 24 cm. ISBN: 0670883395 (alk. paper) Subjects--Topical Terms: Interpersonal communication.Interpersonal communication--Case studies. Dewey Class. No.: 158.2/ S877d