Oxford University Press, 1951
Buku Teks
Shteppa, Konstantin F.
Rutgers University Press, 1962
Buku Teks
Shacford, R.H.
Public Affairs Press, 1952
Buku Teks
Fischer, George
Harvard University Press, 1952
Buku Teks
edited by Alexander Dallin, Gail W. Lapidus
Westerview Press, 1991
Buku Teks