Chidsey, Donald Barr
Crown Publishers, 1966
Buku Teks
American Council on Education, 1964
Buku Teks
Rudolph, Frederick
Knopf , 1962
Buku Teks
Fine, Benjamin, author
Barron's Educational Series, 1966
Buku Referensi
edited by Richard Hofstadter and Wilson Smith
University of Chicago Press, 1961
Buku Teks