Calvocoressi, Peter
Longman, 1992
Buku Teks SO
Carter, April
Postwar World, 1945
Buku Teks SO
edited with an introduction by Richard M. Dalfiume
Quadrangle Books, 1969
Buku Teks SO
Blackburn, Glenn
St. Martin's, 1985
Buku Teks SO
Hanley, D.L. (David L.), 1944-
Routledge, 1989
Buku Teks SO