Hills, George S., author
Garland Pubishing, 1982
Buku Teks
Israels, Carlos L.
Warren, Gorham and Lamont,Inc., 1971
Buku Teks
Currance, Phillip L., author
Elsevier, 2005
Buku Teks
Blackman, William C., author
CRC Lewis, 1996
Buku Teks
Gelfand, M. David, author
West Publishing, 1986
Buku Teks