Ensayos sobre individualidad - Dos Passos, John; Weaver, Richard M; Schoeck, Helmut; Malin, James C; Hayek, Friedrich August von; Krutch, Joseph Wood; Zirkle, Conway; Morley, Félix; Williams, Roger I; Friedman, Milton; Ekirch, Arthur A; McGovern, William M (Hombres y Problemas, 37, 1960)