Leathley, Christian, author
Kluwer, 2007
Buku Teks
M. Mossadeq Bahri, author
Lembaga Penelitian Universitas Indonesia, 2004
Artikel Jurnal
Forsythe, David P., 1941-, author
Cambridge University Press, 2000
Buku Teks
Forsythe, David P., 1941-, author
Cambridge University Press, 2012
Buku Teks
McBeth, Adam, author
Oxford Univ Press, 2011
Buku Teks