Fensterheim, Herbert, 1921- Don't say yes when you want to say no : how assertiveness training can change your life / by Herbert Fensterheim and Jean Baer. - New York : McKay, [1975] - xi, 275 p. ; 22 cm. Includes index. Bibliography: p. 266-270. ISBN: 067950513X LCCN: 74025720 Subjects--Topical Terms: Assertiveness training.Behavior modification. LC Class. No.: BF575.A85 / F46 Dewey Class. No.: 158.2 / FEB 1975