Jessup, Philip Caryl, 1897-1986
Yale University Press, 1956
Buku Teks
Hannerz, Ulf
Routledge, 1996
Buku Teks
Becker, Christian U.
Springer, 2012
eBooks
Collier, John Greenwood
Cambridge University Press, 1987
Buku Teks
Hay, Peter
West Publishing, 1994
Buku Teks