David Efron


, 1971, Gesture and environment: A tentative study of some of the spatio-temporal and "linguistic" aspects of the gestural behavior of eastern Jews and southern Italians in New York City, living under similar as well as different environmental conditions, 2nd edn., Mouton, The Hague.

with Foley, J. , 1937a, 'Gestural behavior and social setting', Zeitschrift für Sozialforschung 6 (1), 152-161.