The Amerika-Haus bookmobile program.
part I: who are the bookmobile users?

APA Citation

United States. American Embassy. Office of Public Affairs. (1957). The Amerika-Haus bookmobile program. Germany: American Embassy, Office of Public Affairs.

MLA Citation

United States. American Embassy. Office of Public Affairs. The Amerika-Haus Bookmobile Program. Germany: American Embassy, Office of Public Affairs, 1957.

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