Eltis, W.A.
Hutchinson University Library , 1966
Buku Teks
Weil, David N., author
Pearsons Addison-Wesley, 2009
Buku Teks
Rostow, Walt Whitman, author
W.W. Norton, 1962
Buku Teks
Morishima, Michio
Oxford University Press, 1970
Buku Teks
Barro, Robert J., author
McGraw-Hill, 1995
Buku Teks