Thomas, Michael J.K.
John Wiley & Sons, 1996
Buku Teks
Brock, Thomas D.
Prentice-Hall, 1991
Buku Teks
Kroes, Michael J
Macmillan/McGraw-Hill, 1990
Buku Teks
Vanderbilt University Press, 1960
Buku Teks
Jackson, William Thomas Hobdell
Collier, 1966
Buku Teks