Unchurched Belt (English Wikipedia)

Finke, Roger; Scheitle, Christopher (2005). "Accounting for the Uncounted: Computing Correctives for the 2000 RCMS Data". Review of Religious Research. 47 (1): 5. doi:10.2307/4148278. JSTOR 4148278. Archived from the original on 2012-02-04. Retrieved 2011-12-12.
Wright, Richard A (1986). "Reviewed work(s): Big Structures, Large Processes, Huge Comparisons by Charles Tilly". Annals of the American Academy of Political and Social Science. 484: 184–185. doi:10.1177/0002716286484001043. JSTOR 1045222. S2CID 220789101.

gallup.com

Newport, Frank (April 27, 2006). "Church Attendance Lowest in New England, Highest in South". Gallup. Retrieved 2010-01-22.
Newport, Frank (July 28, 2008). "Belief in God Far Lower in Western U.S." Gallup. Retrieved 2010-01-22.
Newport, Frank (August 7, 2009). "Religious Identity: States Differ Widely". Gallup. Retrieved 2010-01-22.

Finke, Roger; Scheitle, Christopher (2005). "Accounting for the Uncounted: Computing Correctives for the 2000 RCMS Data". Review of Religious Research. 47 (1): 5. doi:10.2307/4148278. JSTOR 4148278. Archived from the original on 2012-02-04. Retrieved 2011-12-12.

Nigel Barber (13 November 2014). "Why Religion is so Weak in Maine". Huffington Post. Retrieved 25 September 2016.

Finke, Roger; Scheitle, Christopher (2005). "Accounting for the Uncounted: Computing Correctives for the 2000 RCMS Data". Review of Religious Research. 47 (1): 5. doi:10.2307/4148278. JSTOR 4148278. Archived from the original on 2012-02-04. Retrieved 2011-12-12.
Wright, Richard A (1986). "Reviewed work(s): Big Structures, Large Processes, Huge Comparisons by Charles Tilly". Annals of the American Academy of Political and Social Science. 484: 184–185. doi:10.1177/0002716286484001043. JSTOR 1045222. S2CID 220789101.

"North American Religion Atlas". Indiana University Purdue University-Indianapolis.

Wright, Richard A (1986). "Reviewed work(s): Big Structures, Large Processes, Huge Comparisons by Charles Tilly". Annals of the American Academy of Political and Social Science. 484: 184–185. doi:10.1177/0002716286484001043. JSTOR 1045222. S2CID 220789101.

Finke, Roger; Scheitle, Christopher (2005). "Accounting for the Uncounted: Computing Correctives for the 2000 RCMS Data". Review of Religious Research. 47 (1): 5. doi:10.2307/4148278. JSTOR 4148278. Archived from the original on 2012-02-04. Retrieved 2011-12-12.
Kosmin, Barry A.; Keysar, Ariela (March 2009). "American Religious Identification Survey (ARIS 2008)" (PDF). Trinity College. p. 17. Archived from the original (PDF) on 2011-07-17. Retrieved 2010-01-22.
Kosmin, Barry A.; et al. (2009). "American Nones: The Profile of the No Religion Population" (PDF). Trinity College. Archived from the original (PDF) on 2009-10-07. Retrieved 2010-01-22.