edited by John Mohan
Oxford University Press, 1999
Buku Teks
McAllister, Donald M., author
MIT Press, 1995
Buku Teks
Tan, Gerald, author
Times Academic Press, 2000
Buku Teks
Longrigg, Stephen Hemsley, author
Oxford University Press , 1956
Buku Teks
Columbia University Press, 1979
Buku Teks