Valkenier, Elizabeth Kridl, author
Frederick A. Praeger, 1983
Buku Teks
Macmillan, 1989
Buku Teks
Dallin, Alexander, editor
Frederick A. Praeger , 1962
Buku Teks
Purcell, Victor, 1896-1965, author
Victor Gollancz, 1954
Buku Teks
Pokshishevsky, V., author
Progress, 1974
Buku Teks