Bennett, Andrew L. & George, Alexander, “Case Studies and Theory Development in the Social Sciences”, Belfer Centre for Science and International Affairs, 2005
Davies, Martin Brett, “Doing a Successful Research Project”, Palgrave Macmillan, 2007
Evera, Stephen V., “Guide to Methods for Students of Political Science”, Cornell University Press, 1997
Johnson, Janet B. & Reynolds, H.T., “Political Science Research Methods”, Congress Quarterly Press, 2008
Johnson, Janet B. & Reynolds, H.T., “Working with Political Science Research Methods: Problems and Exercises”, Congress Quarterly Press, 2008
