edited by Peter Cumper, Tom Lewis
Edward Elgar, 2012
Buku Teks
Mitchell, Basil, author
Oxford University Press, 1970
Buku Teks
Greeley, Andrew M., author
Erlangga, 1988
Buku Teks
Fay, Martha
Simon & Schuster, 1994
Buku Teks
Roberts, Keith A.
Dorsey Press, 1984
Buku Teks