@article{McKeeLeader, author = {McKee, John P. and Leader, Florence B.}, title = {The Relationship of Socio-Economic Status and Aggression to the Competitive Behavior of Preschool Children}, series = {Child Development, Vol. 26, (No. 2, June 1955), pp. 135-142.}, journal = {Child Development, Vol. 26, (No. 2, June 1955), pp. 135-142.}, language = {en} }