Kozulin, Alex, author
Harvester Wheatsheaf, 1990
Buku Teks
Thompson, June M., author
Westview Press, 1990
Buku Teks
Rauch, Georg von, author
Frederick A. Preager , 1957
Buku Teks
edited by Andrew Rothstein and Clemens Dutt
Foreign Languages Pub. House, 1960
Buku Teks
Walsh, Warren Bartlett, author
The University of Michigan Press, 1958
Buku Teks