Snyder, Louis L.
World in the twentieth century
Princeton University Press, 1964
Buku Teks SO
Perspectives on world
Routledge, 1992
Buku Teks
Mende, Tibor
World power in the balance
Noonday Press, 1953
Buku Teks SO
Kegley, Charles William, Jr.
The global future : a brief infroduction to world politics
Wardsworth, 2010
Buku Teks SO
Calvocoressi, Peter
World politics since 1945
Longman, 1991
Buku Teks SO