Cambridge University Press, 1991
eBooks
Alger, Horatio
Horaito Alger Association of Distinguished America, 1994
Buku Teks
Levenson, Michael, author
Cambridge University Press, 2009
eBooks
Paris, Bernard J., author
Indiana University Press, 1974
Buku Teks
Bienkowski, Andrew, author
Pocket Books, 2009
Buku Teks