Ford, Larry R., author
Johns Hopkins University Press, 1994
Buku Teks
Choldin, Harvey M.
McGraw-Hill, 1985
Buku Teks
Stow, Randolph, 1935-2010, author
Taplinger Pub. Co, 1984.
Buku Teks
Sievert, Thomas, author
Spon Press, 2003
Buku Teks
Mumford, Lewis, author
Harcourt, Brace, 1938
Buku Teks