Burckhardt, Jacob, author
Harper & Row Publisher, 1958.
Buku Teks
Burckhardt, Jacob, author
Harper Torchbooks, 1968
Buku Teks
Durant, Will, author
Simon and Schuster, 1953
Buku Teks
edited with introductions by Joan Mickelson-Gaughan
Scarecrow Press, 1991
Buku Referensi
Webster, Hutton, author
D.C. Heath, 1947
Buku Teks