Monro, Donald M., author
Edward Arnold, 1974
Buku Teks
Mansfield, Richard, author
Elex Media Komputindo, 2002
Buku Teks
Sterling, T.D., author
Macmillan, 1970
Buku Teks
Monro, Donald M., author
Edward Arnold, 1977
Buku Teks
Keller, Arthur M., author
McGraw-Hill, 1982
Buku Teks