Cox, Archibald, 1912-2004, author
Houghton Mifflin, 1987
Buku Teks
Beard, Charles A., author
Prentice-Hall, 1962
Buku Teks
Welch, Joseph N., author
Houghton Miffiln, 1956
Buku Teks
Lamparello, Adam, author
NY Routledge, 2017
Buku Teks
Hirschfield, Robert S., author
Random House, 1962
Buku Teks