Americana Corporation, 1980
Buku Referensi
Dull, Jonathan R
Yale University Press, 1985
Buku Teks
edited by Bruce Catton
American Heritage, 1958
Buku Teks
Gagey, Edmond M., author
Columbia University Press, 1948
Buku Teks
edited by John Stone, Rutledge Dennis, Polly Rizova, Anthony D. Smith, and Xiaoshuo Hou
John Wiley & Sons, 2016
Buku Referensi