Darryl S.L. Jarvis, Anthony Welch, editor
Palgrave Macmillan, 2011
Buku Teks
Severino, Rodolfo C., Jr., author
ASEAN Secretariat, 1999
Buku Teks
Yahuda, Michael, author
Routledge, 1996
Buku Teks
Yahuda, Michael, author
Routledge, 1996
Buku Teks
Stein, Gunther
McGraw-Hill Book Company, Inc., 1945
Buku Teks