Holten, N. Gary, author
McGraw-Hill, 1991
Buku Teks
Lewis, Merlin, author
Prentice-Hall, 1978
Buku Teks
Gardner, Thomas J., 1800-1850, author
Wadsworth and Cengage Learning, 2012
Buku Teks
LaFave, Wayne R., author
West A Tomson Reuters Busines, 2011
Buku Teks
Prassel, Frank R.
Goodyear Publishing Company, 1979
Buku Teks