Fouraker, Lawrence E.
McGraw-Hill, 1963
Buku Teks
Weil, David N.
Pearsons Addison-Wesley, 2009
Buku Teks
Eltis, W.A.
Hutchinson University Library , 1966
Buku Teks
Baumol, William J.
New York, N.Y. : Macmillan, 1959,
Buku Teks
Rostow, Walt Whitman
W.W. Norton, 1962
Buku Teks