Belsley, David A., Edwin Kuh, and Roy E. Welsch.1980. Regression Diagnostics: Identifying Influential Data and Sources of Collinearity. New York : John Wiley.
2.
Borgonovi, Francesca.2008. ‘‘Divided We Stand, United We Fall: Religious Pluralism, Giving, and Volunteering.’’ American Sociological Review73:105-28.
3.
Gesis.2009. Tabular History of International Comparative Survey Research Projects. Compiled March 29, 2009 (http://www.gesis.org/en/services/data/portals-links/comparative-survey-projects/#%291).
Kelley, Jonathan and Nan Dirk De Graaf.1997. ‘‘National Context, Parental Socialization, and Religious Belief: Results from 15 Nations.’’American Sociological Review62:639-59.
6.
Langford, Ian H. and T. Lewis.1998. ‘‘Outliers in Multilevel Data.’’Journal of the Royal Statistical Society: Series A (Statistics in Society) 161:121-60.
7.
Ruiter, Stijn and Nan Dirk De Graaf.2006. ‘‘National Context, Religiosity, and Volunteering: Results from 53 Countries.’’American Sociological Review71:191-210.
8.
Snijders, Tom A. B. and Johannes Berkhof.2008. ‘‘Diagnostic Checks for Multilevel Models.’’ Pp. 457-514 in Handbook of Multilevel Analysis, edited by J. De Leeuw and E. Meijer.New York: Springer.
9.
Wilson, John and Marc Musick.1997. ‘‘Who Cares? Toward an Integrated Theory of Volunteer Work.’’ American Sociological Review62:694-713.