Jessup, Philip Caryl, 1897-1986
Yale University Press, 1956
Buku Teks
Hannerz, Ulf
Routledge, 1996
Buku Teks
Becker, Christian U.
Springer, 2012
eBooks
Montesquieu, Charles de Secondat,1689-1755
Hafner Press, 1949
Buku Teks
Collier, John Greenwood
Cambridge University Pers, 1994
Buku Teks