Adem, Seifudein, author
Routledge, Taylor & Francis Group, 2018
Buku Teks
Schuman, Frederick L., author
McGraw-Hill, 1969
Buku Teks
edited by G. John Ikenberry
Cambridge University Press, 2014
Buku Teks
Nayar, Baldev Raj, author
Cambridge, 2003
Buku Teks
Vitalis, Robert, 1955-, author
New York Cornell University Press, 2015
Buku Teks