Stahl, Kathleen M., author
Faber and Faber, 1950
Buku Teks
Suvorov, Viktor, author
Macmillan, 1995
Buku Teks
Valkenier, Elizabeth Kridl, author
Frederick A. Praeger, 1983
Buku Teks
edited by Kinya Niiseki
Westview Press, 1987
Buku Teks
Stamps, Norman L.
University of Notre Dame Press, 1957
Buku Teks