Howard, William M.
McGraw-Hill , 1967
Buku Teks
Josephy, Alvin M.
Alfred A. Knopf, 1970
Buku Teks
Miller, Walter M.
Harper & Row , 1997
Buku Teks
Hynes, J. Dennis, author
The Bobbs-Merill Company, 1974
Buku Teks
Hynes, J. Dennis, author
The Michie Company, 1994
Buku Teks