1. BACK, K. W."Influence through Social Communication."J. abnorm. soc. Psychol., 195I, 46, 9-23.
2.
2. SCHACHTER, S., ELLERTSON, N., MCBRIDE, DOROTHY, and GREGORY, DoRis. "An Experimental Study of Cohesiveness and Productivity."Hum. Rel., I95I, Vol. IV, No. 3, 229-238.