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APA citation. Clean and Unclean. (1908). In The Catholic Encyclopedia. New York: Robert Appleton Company. http://www.newadvent.org/cathen/04010c.htm
MLA citation. "Clean and Unclean." The Catholic Encyclopedia. Vol. 4. New York: Robert Appleton Company, 1908. <http://www.newadvent.org/cathen/04010c.htm>.
Ecclesiastical approbation. Nihil Obstat. Remy Lafort, Censor. Imprimatur. +John M. Farley, Archbishop of New York.
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