Kaldor, Nicholas, author
Gerald Duckworth, 1960
Buku Teks
Benavie, Arthur, author
Prentice-Hall, 1972
Buku Teks
edited by Karl Shell
MIT Press, 1967
Buku Teks
Kuznets, Simon Smith, 1901-, author
W.W. Norton&Company-Inc, 1965
Buku Teks
edited by David Cass, Karl Shell
Academic Press, 1976
Buku Teks