Hickman, Bert G., author
The Brooking Institution , 1965
Buku Teks
Princeton University Press, 1962
Buku Teks
Committee for Economic Development , 1972
Buku Teks
New York National Bureau of Economic Research, 1947 c.1943,
Buku Teks
Millikan, Max F., author
Columbia University Press, 1967
Buku Teks