P. Burnham, . Gilland, . Karin, W. Grant, and Z. Layton-henry, Research Methods in Politics, 2008.
DOI : 10.1007/978-0-230-36556-8

R. E. Goodin, The Oxford Handbook of Contextual Political Analysis, 2006.
DOI : 10.1093/oxfordhb/9780199270439.001.0001

E. S. Lieberman, Nested Analysis as a Mixed-Method Strategy for Comparative Research, American Political Science Review, vol.10, issue.03, pp.435-52, 2005.
DOI : 10.2307/2082979

D. Marsh and G. Stoker, Theory and Methods in Political Science, 2002.
DOI : 10.1007/978-1-349-24106-4

A. J. Martin, Self-reflection on emergent research design, Graduate Journal of Social Science, vol.5, issue.1, pp.49-70, 2008.

M. Moran, M. Rein, and R. E. Goodin, The Oxford Handbook of Public Policy, 2006.