Edited by Patrik O`Brian Holt; Noel Williams
Kluwer Academic Publishers , 1992
Buku Teks
Redstone, Louis G.
New York: McGraw-Hill, 1981
Buku Teks
edited by Jon McCormack, Mark d`Inverno
Springer-Verlag, 2012
eBooks
Pick, John
Harwood Academic, 1999
Buku Teks
guest-edited by Paul Wells
Academy Group, 1997
Buku Teks