Weller, B., author
International Labour Office, 1994
Buku Teks
edited by Tanja Bastia
Routledge, 2013
Buku Teks
Ea Ostetgaard, editor
Parlgrave Macmillan, 2003
Buku Teks
edited by Reginald T. Appleyard
University of Western Australia, Centre for Migration and Development Studies, 1988
Buku Teks
Appleyard, Reginald T., author
IOM, 1991
Buku Teks