Bromley, Daniel W., 1940-, author
Basil Blackwell, 1989
Buku Teks
Bellinger, William Kenneth, author
Routledge, 2007
Buku Teks
Starling, Grover, author
Dorsey Press, 1979
Buku Teks
Howlett, Michael, author
Oxford University Press, 2009
Buku Teks
North, Douglass C., author
Princeton University Press, 2005
Buku Teks