Heller, Edward D.
Addison- Wesley , 1971
Buku Teks
Konkel, James H., author
McGraw-Hill, 1987
Buku Teks
Clark, John E.
McGraw-HIll, 1983
Buku Teks
Murthy, M.R.S.
Tata McGraw-Hill , 1988
Buku Teks
de Neuville, Richard, author
McGraw-Hill, 1990
Buku Teks