Citation: Pj. Beckman et J. Lieber, THE SOCIAL STRATEGY RATING-SCALE - AN APPROACH TO EVALUATING SOCIAL COMPETENCE, Journal of early intervention, 18(1), 1994, pp. 1-11
Citation: J. Lieber et al., A LONGITUDINAL-STUDY OF THE SOCIAL EXCHANGES OF YOUNG-CHILDREN WITH DISABILITIES, Journal of early intervention, 17(2), 1993, pp. 116-128