Plender, Richard
Sijthoff, 1972
Buku Teks SO
Vincent Chetail, Celine Bauloz
Edward Elgar, 2015
Buku Teks
Mann, Itamar
Cambridge University Press, 2016
Buku Teks
edited by Reginald T. Appleyard
University of Western Australia, Centre for Migration and Development Studies, 1988
Buku Teks
Appleyard, Reginald T.
IOM, 1991
Buku Teks