APA (7th ed.) Citation

Gall, E., & Schmidt-Glassner, H. (1963). Cathedrals and abbey churches of the Rhine. Abrams.

Chicago Style (17th ed.) Citation

Gall, Ernst, and Helga Schmidt-Glassner. Cathedrals and Abbey Churches of the Rhine. New York: Abrams, 1963.

MLA (9th ed.) Citation

Gall, Ernst, and Helga Schmidt-Glassner. Cathedrals and Abbey Churches of the Rhine. Abrams, 1963.