Schühly, G., & Mueller, U. (1997). Secularization in Eastern and Western Europe Results from the ISSP 1991 Survey on Religion in 10 West and East European Nations.
Παραπομπή σε μορφή Chicago (17η εκδ.)Schühly, Günther, και Ulrich Mueller. Secularization in Eastern and Western Europe Results from the ISSP 1991 Survey on Religion in 10 West and East European Nations. Mannheim, 1997.
Παραπομπή σε μορφή MLA (8th εκδ.)Schühly, Günther, και Ulrich Mueller. Secularization in Eastern and Western Europe Results from the ISSP 1991 Survey on Religion in 10 West and East European Nations. 1997.
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