Friedrich, Carl J., author
Prederick A. Praeger, 1965
Buku Teks
Friedrich, Carl J., author
Frederick A. Praeger, 1962
Buku Teks
Schwarzenberger, Georg, author
Thirty Bedford Square, 1943
Buku Teks
Oxford University Press, 1995
Buku Teks
Schulz, Ernest B
[publisher not identified], 1956
Buku Teks