Ortega, Francesc. "Immigration, Citizenship, and the Size of Government" The B.E. Journal of Economic Analysis & Policy, 10.1 (2010): -. Retrieved 18 May. 2013, from doi:10.2202/1935-1682.2324

Ortega, F. (2010). Immigration, Citizenship, and the Size of Government. The B.E. Journal of Economic Analysis & Policy, 10(1), pp. -. Retrieved 18 May. 2013, from doi:10.2202/1935-1682.2324

Ortega, Francesc. 2010. Immigration, Citizenship, and the Size of Government. The B.E. Journal of Economic Analysis & Policy. 10(1): -. Retrieved 18 May. 2013, from doi:10.2202/1935-1682.2324