Shields, Paul C.
Worth Publishers, 1980
Buku Teks
Pillis, John de
Holt, Rinehart and Winston, 1969
Buku Teks
Lawson, Terry
John Wiley & Sons, 1996
Buku Teks
Anton, Howard
John Wiley & Sons, 1984
Buku Teks
Kolman, Bernard, 1932-
Macmillan, 1976
Buku Teks