Mehrabian, Albert, Silent messages : implicit communication of emotions and attitudes / Albert Mehrabian. - 2nd ed. - Belmont, Ca. : Wadsworth Publishing Co., 1981. - 196 p. : ill. ; 23 cm. Includes index Bibliography: p.165-189 ISBN: 0534009107 8.95 Subjects--Topical Terms: Nonverbal communication (Psychology)