Current economic policies : selected discussions / editor Joseph B. Hubbard
Henry Holt and Co., 1934
 Buku Teks
Holt, Edwin B. (Edwin Bissell), 1873-1946
The concept of consciousness / Edwin B. Holt
Macmillan, 1974
 Buku Teks
Bryce, Murray D.
Policies and methods for industrial development
McGraw-Hill, 1965
 Buku Teks
Moulton, Harold G.
Income and economic progress
Brookings Institution, 1935
 Buku Teks
Economic progress and social welfare
edited by Leonard H. Goodman
Columbia University Press, 1966
 Buku Teks