Scott Frickel; Kelly Moore, editor
University of Wisconsin Press , 2006
Buku Teks
Rush, Michael, author
Harvester Wheatsheaf, 1992
Buku Teks
Cambridge University Press, 2020
eBooks
Archibald, W. Peter (William Peter), 1943-, author
McGraw-Hill Ryerson, 1978
Buku Teks
Tugba Basaran, Didier Bigo, Emmanuel-Pierre Guittet and R.B.J Walker.
Routledge, 2017
Buku Teks