G. Arikan, и P. Bloom. Political Studies, 63 (2):
431-448(2015)First published online: January 8, 2014, http:dx.doi.org/10.1111/1467-9248.12100. (ISSP).
J. Hudson, N. Jo, и A. Keung. Culture and the Politics of Welfare: Exploring Societal Values and Social Choices, Palgrave Macmillan UK, London, http://dx.doi.org/10.1057/9781137457493_2. (EVS).(2015)