Hecht, Jeff, author
McGrawHill, 1986
Buku Referensi
Sykes, Peter
Longmans, 1966
Buku Referensi
Simpson, Phil, author
[Springer, ], 2012
eBooks
Hughes, Fredrick W., author
Prentice-Hall, 1983
Buku Referensi
Traister, John E., author
Reston Publishing Company, 1979
Buku Referensi