Kinsella, David
Wadsworth, Cengage Learning, 2013
Buku Teks SO
Russett, Bruce
Wadsworth, 2010
Buku Teks
edited by Roy C. Macridis
Prentice-Hall, 1992
Buku Teks
Roskin, Michael G.
Pearson/Prentice Hall, 2004
Buku Teks
William I. Hitchcock, Melvyn P. Leffler, Jeffrey W. Legro.
Massachusetts Harvard University Press, 2016
Buku Teks