↑ Freedom House (2017). Freedom in the World, 2017 (PDF). Freedom House. tr. 1. Bản gốc (PDF) lưu trữ ngày 27 tháng 7 năm 2017. Truy cập ngày 27 tháng 7 năm 2017. [N]early one-quarter of the countries registering declines in 2016 were in Europe.
↑ Bollen has held chairs as a Distinguished Professor of Sociology and the Director of the Howard W. Odum Institute for Research in Social Science at the University of North Carolina at Chapel Hill (UNC-CH). Also serving as an Adjunct Professor of Statistics at UNC-CH, Bollen wrote the leading graduate textbook in structural equation models (SEM), often called LISREL models; SEM modeling allows the summary of a large number of measurements using a small number of meaningful factors. SEM was used by Bollen in the studies reported hereafter.
1 2 Mainwaring, S.; Brinks, D.; Pérez-Liñán, A.B. (2001). “Classifying Political Regimes in Latin”. Studies in Comparative International Development. 36 (1): 37–65. doi:10.1007/BF02687584.
↑ Gastil, R.D. (1990). “The Comparative Survey of Freedom: Experiences and Suggestions”. Studies in Comparative International Development. 25 (1): 25–50. doi:10.1007/BF02716904.
↑ Giannone, Diego, "Political and ideological aspects in the measurement of democracy: the Freedom House case", Democratization, vol. 17, no. 1 (February 2010), pp. 68–97.[nguồn không đáng tin?]
↑ "Concept Misformation in Comparative Politics." The American Political Science Review 64 (4): 1033–1053.
↑ Scoble, Harry and Laurie Wiseberg, Ved Nanda, Ved, James Scarritt, and George Shepherd (eds) (1981), "Problems of Comparative Research in Human Rights", Global Human Rights: Public Policies, Comparative Measures and NGO Strategies, pp. 147–171, Westview Press, Boulder, CO, ISBN978-0-89158-858-0. Cited in Giannone (2010), p. 69.
↑ Giannone (2010), p. 69, citing Scoble, et al. (1981) and Axel Hadenius and Jan Teorell. "Assessing Alternative Indices of Democracy", Political Concepts, Committee on Concepts and Methods, Working Paper Series, August 2005, 47 pp.
