Gilbert, Martin, author
Routledge, 1994
Buku Teks
Bugnion, Francois, author
International Committee of the Red Cross, 2003
Buku Teks
Glueck, Sheldon
Kraus Reprint , 1976
Buku Teks
Spohr, Kristina, author
Oxford University Press, 2016
eBooks
Khoo, Kheng Hor, author
Bhuana Ilmu Populer , 2003
Buku Teks