Mackie, Gerry (November 1995). "Frustration and preference change in international migration". European Journal of Sociology. 36 (2): 185–208. doi:10.1017/S0003975600007530. S2CID144656626.
Vernon, Richard (July 1987). "Citizenship and Employment in an Age of High Technology". British Journal of Industrial Relations. 25 (2). Blackwell Publishing: 201–225. doi:10.1111/j.1467-8543.1987.tb00709.x.
Mackie, Gerry (November 1995). "Frustration and preference change in international migration". European Journal of Sociology. 36 (2): 185–208. doi:10.1017/S0003975600007530. S2CID144656626.