Keiser, Norman F., author
John Wiley & Sons, 1964
Buku Teks
Kuznets, Simon Smith, 1901-, author
W.W. Norton&Company-Inc, 1965
Buku Teks
Nurkse, Ragnar, 1907-1959, author
Harvard University Press, 1962
Buku Teks
Perthel, Dirk, author
Amsterdam University, 1981
Buku Teks
Peterson, Wallace C.
W.W. Norton & Co., 1962
Buku Teks