Kleitz, William, author
Upper Saddle River, N.J. Prentice Hall 1996,
Buku Teks
Kleitz, William
Pearson/Prentice Hall, , 2008.
Buku Teks
Tokheim, Roger L., author
Jakarta Erlangga 1995,
Buku Teks
Green, William B.
Van Nostrand Reinhold Co., 1983
Buku Teks
Greenfield, Joseph D., author
Wiley, 1977.
Buku Teks