by Ulrich Steger [and others]
John Wiley & Sons, 2004
Buku Teks
edited by Kose John, Anil K. Makhija, Stephen P. Ferris
Emerald, 2017
eBooks
John Wiley & Sons, 2004
Buku Teks
Surbakti, Ramlan, author
Ministry of Home Affairs R.I., 2000
Buku Teks
Tony Elger, Chris Smith, editor
Routledge, , 2011.
Buku Teks