Vel, Jacqueline A. C., author
KITLV Press, 2008
Buku Teks
Buku Teks
Esser, Samuel Jonathan, 1900-1944, author
Nijhoff, 1964
Buku Teks
International IDEA
International IDEA, 2000
Buku Teks
Norbert Eschborn; Joyce Holmes Richardson; Henriette Litta
Konkrad-Adenauer-Stiftung, 2005
Buku Teks