Casady, Mona J. author
South-Western Publishing, 1985
Buku Teks
Rosenfeld, Louis, author
O'Reilly, 2002
Buku Teks
Rosenfeld, Louis, author
O'Reilly Published, 1998
Buku Teks
Pedley, Paul, author
Facet, 2006
Buku Teks
Blake, Monica, author
Aslib , 1999
Buku Teks