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Zinnbauer, Brian J.; Pargament, Kenneth I.; Cole, Brenda et al. (December 1997). “Religiousness and Spirituality: Unfuzzying the Fuzzy”. Journal for the Scientific Study of Religion36 (4): 549–564. doi:10.2307/1387689. JSTOR1387689.
McCutcheon, Russell T. (2010-12-01). “Will Your Cognitive Anchor Hold in the Storms of Culture?”. Journal of the American Academy of Religion78 (4): 1182–1193. doi:10.1093/jaarel/lfq085. ISSN0002-7189.