Jahn, Egbert
World Political Challenges
Springer-Verlag, 2015
eBooks
Perspectives on world
Routledge, 1992
Buku Teks
Back to basics : state power in a contemporary world
Oxford University Press, 2013
Buku Teks SO
Snyder, Louis L.
World in the twentieth century
Princeton University Press, 1964
Buku Teks SO
Mende, Tibor
World power in the balance
Noonday Press, 1953
Buku Teks SO