Cita APA

Stiefel, E. (1956). Trading under the laws of Germany. German American Trade Promotion Off.

Citación estilo Chicago

Stiefel, Ernst. Trading Under the Laws of Germany. New York: German American Trade Promotion Off, 1956.

Cita MLA

Stiefel, Ernst. Trading Under the Laws of Germany. German American Trade Promotion Off, 1956.