Russel Sage Foundation, 2000
Buku Teks
Darren P Smith, Nissa Finney, Keith Halfacree
Routledge, 2016
Buku Teks
Irena Omelaniuk
Springer, 2012
eBooks
edited by Reginald T. Appleyard
University of Western Australia, Centre for Migration and Development Studies, 1988
Buku Teks
Maideus, Melinda
Facts on File, 1981
Buku Teks