Stockdale, James B., author
Stanford University, 1984
Buku Teks
Gildersleeve, Virginia Crocheron, author
Macmillan, 1954
Buku Teks
Caro, Robert A., author
Alfred A. Knopf, 1983
Buku Teks
Parks, Lillian Rogers
Fleet Publishing , 1961
Buku Teks
Koch, Adrienne, author
Modern Library, 1944
Buku Teks