Sommer, Robert. Personal space : the behavioral basis of design / Robert Sommer. - Englewood Cliffs, N.J., : Prentice-Hall, 1969. - xi, 177 p. ; 22 cm. - A Spectrum book . Bibliographical footnotes. Subjects--Topical Terms: Personal space LC Class. No.: BF469 Dewey Class. No.: 155.9/6