Hager, R. (1966). The Zahringer new towns: Modern planning concepts in the towns built during the 12th century in Southern Germany and Switzerland by Dukes of Zahringen. [s.l.]: Swiss Federal Institute of Technology. Department of Architecture.
Παραπομπή Chicago StyleHager, Rolf. The Zahringer New Towns: Modern Planning Concepts in the Towns Built During the 12th Century in Southern Germany and Switzerland By Dukes of Zahringen. [s.l.]: Swiss Federal Institute of Technology. Department of Architecture, 1966.
Παραπομπή MLAHager, Rolf. The Zahringer New Towns: Modern Planning Concepts in the Towns Built During the 12th Century in Southern Germany and Switzerland By Dukes of Zahringen. [s.l.]: Swiss Federal Institute of Technology. Department of Architecture, 1966.