Weil, David N.
Pearsons Addison-Wesley, 2009
Buku Teks
Rostow, Walt Whitman
W.W. Norton, 1962
Buku Teks SO
Eltis, W.A.
Hutchinson University Library , 1966
Buku Teks
Morishima, Michio
Oxford University Press, 1970
Buku Teks SO
edited by Ralph Landau, Timothy Taylor and Gavin Wright
Stanford University Press, 1996
Buku Teks SO