Paul Pennings, Hans Keman, Jan Kleinnijenhuis. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics Second Edition, SAGE, 2006. http://www.sagepub.com/booksProdDesc.nav?prodId=Book227131
Paul Pennings, Hans Keman, Jan Kleinnijenhuis. Doing Research in Political Science: An Introduction to Comparative Methods and Statistics Second Edition, SAGE, 2006. http://www.sagepub.com/booksProdDesc.nav?prodId=Book227131