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• The Geistreiches Gesangbuch of Johann Anastasius Freylinghausen (1670-1739. A German pietist hymnal. Vol. 1 and 2. McMullen, Dianne Marie Ann Arbor, Mich. : UMI Diss. Inform. Service, 1988

• The problem of subjectivism in pietism. A redefinition with special reference to the theology of Philipp Jakob Spener and August Hermann Francke. Brown, Dale W. Ann Arbor, Mich. : UMI, 1963