Lindert, Peter H., author
Irwin , 1996
Buku Teks
Barca, Giuseppe La, author
Bloomsbury, 2014
Buku Teks
Williamson, John
New York University Press, 1991
Buku Teks
Williamson, John
Harvester Wheatsheaf, 1991
Buku Teks
Marcus, Edward, author
Pitman, 1965
Buku Teks