USSR, [date of publication not identified]
Buku Teks
Clyde, Paul Hibbert
Prentice-Hall, 1953
Buku Teks
Goldschmidt, Arthur
Westview Press, 1983
Buku Teks
Hitti, Philip K. (Philip Khuri), 1886-1978
D. Van Nostrand, 1966
Buku Teks
Yale, William
The University of Michigan Press, 1958
Buku Teks