Meyer, Charles H.
West Publishing Co., 1995
Buku Teks
Thomas, David A. Lloyd
Routledge, 1995
Buku Teks
Shannon, Robert E.
John Wiley & Sons, 1980
Buku Teks
Fischer, Robert E., author
McGraw-Hill, 1980
Buku Teks
Wall, Robert E.
NC Press, 1983
Buku Teks