Die kirchliche Baukunst des Abendlandes : historisch und systematisch dargestellt - Dehio, Georg, 1850-1932 (Olms, 1969)
Includes index.
Reprint: 2 vol. of Text (publ. by Cotta 1892-1901), and 5 vol. of Atlas (vol. 1-4 publ. by Cotta, vol. 5 by Bergsträsser 1887-1901).