Clark, W. L. (1923). The Devil's prayer book: Or, An exposure of auricular confession as practiced by the Roman Catholic Church. An eye-opener for husbands, fathers and brothers ([14th ed.].).

Clark, William Lloyd. The Devil's Prayer Book: Or, An Exposure of Auricular Confession as Practiced by the Roman Catholic Church. An Eye-opener for Husbands, Fathers and Brothers. [14th ed.]. Milan, Illinois, 1923.

Clark, William Lloyd. The Devil's Prayer Book: Or, An Exposure of Auricular Confession as Practiced by the Roman Catholic Church. An Eye-opener for Husbands, Fathers and Brothers. [14th ed.]. 1923.