Knapp, Mark L. Essentials of nonverbal communication / [electronic resource] / Mark L. Knapp.. — New York : : Holt, Rinehart and Winston,, c1980.. — viii, 264 p. : : ill. ; 24 cm. Includes bibliographical references and indexes. ISBN: 0030498619 9780030498619 LCCN: 79017769 Subjects--Topical Terms: Body language.Langage du corps. LC Class. No.: BF637.C45 / K56 Dewey Class. No.: 153