Grimm, H. J. (1973). The reformation Era 1500-1650 (2nd ed.). Macmillan Co..

Grimm, Harold J. The Reformation Era 1500-1650. 2nd ed. New York: Macmillan Co., 1973.

Grimm, Harold J. The Reformation Era 1500-1650. 2nd ed. Macmillan Co., 1973.