Richmond, V. P. (1987). Nonverbal behavior in interpersonal relations. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Richmond, Virginia P. Nonverbal Behavior in Interpersonal Relations. Prentice Hall, 1987.
Lua MLA (9ú heag.)Richmond, Virginia P. Nonverbal Behavior in Interpersonal Relations. Prentice Hall, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.