A nation builds :
contemporary German architecture.

APA Citation

German Library of Information (New York, N., Schmitz, M. (1940). A nation builds: contemporary German architecture. New York, N.Y.: German Library of Information.

MLA Citation

German Library of Information (New York, N.Y.), and Matthias Schmitz. A Nation Builds: Contemporary German Architecture. New York, N.Y.: German Library of Information, 1940.

Warning: These citations may not always be complete (especially for serials).