Senn, James A.
Wadsworth, 1978
Buku Teks
O`Brien, James A., 1936-, author
McGraw-Hill, 2011
Buku Teks
Lucey, T.
Grand Union industrial Estate, 1989
Buku Teks
Olson, David Louis, author
McGaw-Hill, 2004
Multimedia
Albrecht, Leon K., author
Macmillan, 1973
Buku Teks