Kastantin, Joseph T., author
Quorum Books, 1988
Buku Teks
Joseph, William, author
McGraw-Hill, 1983
Buku Teks
T. Kanti Srikantaiah, Michael E.D. Koenig, editor
Information Today, 2000
Buku Teks
Delong, Thomas, author
McGraw-Hill Irwin, 2003
Buku Teks
Hansen, Helen F.
W.B. Saunders Company, 1947
Buku Teks