Modelski, George, author
Frederick A. Praeger, 1962
Buku Teks
Hudson, Valerie M., 1958-, author
Rowman and Littlefield, 2014
Buku Teks
edited by James N. Rosenau
Free Press, 1961
Buku Teks
Kai, He, author
Routledge, 2013
Buku Teks
by Frank B. Feigert ... [et al.] ; edited by Don C. Piper and Ronald J. Terchek
American Enterprise Institute for Public Policy Research, 1983
Buku Teks