McGarry, Daniel D., author
Littlefield, Adams, 1968
Buku Teks
Offices of the Royal Historical society, 1963
Buku Referensi
Crawford, Bartholow V.
Barnes & Noble, Inc., 1953
Buku Teks
Mott, George Fox
Barnes & Noble, Inc., 1957
Buku Teks
Ellis, Janice Rider, author
Lippincott , 1996
Buku Teks