Burgoon, Judee, David Buller and W. Gill Woodall (1989) Non-Verbal Communication: The unspoken dialogue. New York: Harper & Row Publishers

Fast, Julius (1977) The Body Language of Sex, Power and Aggression: How to recognize it and how to use it. New York: Jove Publishers

Fast, Julius and Meredith Bernstein (1983) Sexual Chemistry: What it is – how to use it. New York, Pocket Books

Molcho, Samy (1983) Body Speech. New York: St. Martin’s Press

Nierenberg, Gerard and Henry Calero (1971) How to Read a Person Like a Book. New York: Pocket Books