Hawley, E. W. The new deal and the problem of monopoly: Ellis W. Hawley. Twentieth-century america : recent interpretations.(1972).

Hawley, Ellis W. "The New Deal and the Problem of Monopoly: Ellis W. Hawley." Twentieth-century America : Recent Interpretations.(1972) .

Hawley, Ellis W. "The New Deal and the Problem of Monopoly: Ellis W. Hawley." Twentieth-century America : Recent Interpretations.(1972), .