Forsdale, L. (1974). Nonverbal communication. Harcourt Brace Jovanovich.
Cita Chicago (17th ed.)Forsdale, Louis. Nonverbal Communication. Harcourt Brace Jovanovich, 1974.
Cita MLA (9th ed.)Forsdale, Louis. Nonverbal Communication. Harcourt Brace Jovanovich, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.