edited by Milton Gilbert
Bowes & Bowes, 1953
Buku Teks
Moulton, Harold G., author
Brookings Institution, 1935
Buku Teks
National Bureau of Economic Reserach, 1947
Buku Teks
Pigou, Arthur Cecil, 1877-1959, author
Macmillan, 1957
Buku Teks
Weintraub, Sidney, author
Chilton, 1958
Buku Teks