Bollen, Kenneth A. (1991), Inkeles, Alex, ed., "On measuring democracy: Its consequences and concomitants", Proceedings of the Conference on Measuring Democracy, 27–28 May 1988, Hoover Institution, Stanford University (second printing, 1993 ed.), New Brunswick, New Jersey: Transactions Publishers, pp. 3–20, ISBN 0-88738-881-7 |chapter= ignored (help) Bollen, Kenneth; Paxton, Pamela; Morishima, Rumi (June 2005).