Erdmann, C., Baldwin, M. W., & Goffart, W. (1977). The origin of the idea of crusade / (by) Carl Erdmann ; translated from the German by Marshall W. Baldwin and Walter Goffart ; foreword and additional notes by Marshall W. Baldwin. Princeton University Press.
Chicago Style (17th ed.) CitationErdmann, Carl, Marshall Whithed Baldwin, and Walter Goffart. The Origin of the Idea of Crusade / (by) Carl Erdmann ; Translated from the German by Marshall W. Baldwin and Walter Goffart ; Foreword and Additional Notes by Marshall W. Baldwin. Princeton ; Guildford: Princeton University Press, 1977.
MLA (9th ed.) CitationErdmann, Carl, et al. The Origin of the Idea of Crusade / (by) Carl Erdmann ; Translated from the German by Marshall W. Baldwin and Walter Goffart ; Foreword and Additional Notes by Marshall W. Baldwin. Princeton University Press, 1977.