Rittgers, Ronald K., 1965- (Personal Name)
The reformation of the keys, 2004: CIP t.p. (Ronald K. Rittgers) data sheet (b. 08-20-65)
Protestants and mysticism in Reformation Europe, 2019: title page (edited by Ronald K. Rittgers, Vincent Evener) data view (Ronald K. Rittgers, Ph.D. (1998), Harvard University, holds the Erich Markel Chair in German Reformation Studies at Valparaiso University. His published works include The Reformation of the Keys (Harvard 2004) and The Reformation of Suffering (Oxford 2012))