Harper, Michael C.
Little, Brown, 1996
Buku Teks SO
Taylor, Benjamin J.
Prentice-Hall, 1987
Buku Teks SO
Daugherty, Carrol R.
Houghton Mifflin, 1952
Buku Teks
Mullis, Harry A. (Harry Alvin)
McGraw-Hill, 1938
Buku Teks SO
Merrifield, Leroy S.
Michie, 1994
Buku Teks SO