edited for the Society of American Historians by Courtlandt Canby & Nancy E. Gross
New American Library, 1954
Buku Teks SO
Revill, J.C.
Longman, 1959
Buku Teks SO
London Chancellor Press 1999,
Buku Referensi
Dorling Kindersley, 1998
Multimedia
Wells, H.G.
Macmillan, 1922
Buku Teks SO