@book{Castles2014,
author = {Castles, S. and de Haas, H. and Miller, M.J.},
title= {The age of migration: International population movements in the modern world},
year = {2014},
doi = {10.1007/978-0-230-36639-8},
address = {Basingstoke},
publisher = {Palgrave Macmillan},
}