UNHCR, 1997
Buku Teks
Hathaway, James C, author
Cambridge University Press, 2014
Buku Teks
United Nations High Commissioner for Refugees, 2006
Buku Teks
Oliver Dorr
Springer, 2012
eBooks
Villiger, Mark E., author
Martinus Nijhoff Publishers, 2009
Buku Teks