Bingham, Woodbridge, author
Waverly Press, 1941
Buku Teks
Diggins, John Patrick
W.W Norton, 1992
Buku Teks
Jarman, T.L., author
The Cresset Press, 1955
Buku Teks
Quinn, Riley, author
Taylor and Francis, 2017
Buku Teks
Easton, Stewart C., author
Praeger, 1964
Buku Teks