Chanlett, Emil T., author
McGraw-Hill, 1979
Buku Teks
Ministry of Foreign Affairs, Japan, 1974
Buku Teks
editor, Abdul Malik, Elisabeth Grohmann
Springer, 2012
eBooks
Das, Onita, author
Edward Elgar, 2013
Buku Teks
Konkrad-Adenauer-Stiftung, 1996
Buku Teks