Weil, David N.
Pearsons Addison-Wesley, 2009
Buku Teks
Eltis, W.A.
Hutchinson University Library , 1966
Buku Teks
Mundell, Robert A.
Edwar Elgar, 2003
Buku Teks
Rostow, Walt Whitman
W.W. Norton, 1962
Buku Teks
Vinod Thomas [and others]
Gramedia Pustaka Utama, 2001
Buku Teks