Calvocoressi, Peter
Longman, 1992
Buku Teks
Raghavan, Srinath, author
Basic Books, a member of the Perseus Books Group, 2016
Buku Teks
edited by Martin Staniland
Westview Press, 1991
Buku Teks
Attali, Jacques
Pustaka Pelajar, 1997
Buku Teks
Friedmann, Wolfgang, 1907-1972, author
Macmillan, 1951
Buku Teks