Lavigne, Marie
Macmillan Press , 1995
Buku Teks
Stackelberg, Heinrich von
Oxford University Press , 1952
Buku Teks
Bruyn, Severyn T., author
The University of Michigan Press, 2000
Buku Teks
Kontaro, Tsuru, author
LCTB International Library Foundation, 1996
Buku Teks
Henderson, Ronald Frank, author
Bowes and Bowes, 1951
Buku Teks