Style de citation APA (7e éd.)

Arntz,Helmut. (1966). Facts about Germany (6th ed.). Press and Information Office.

Style de citation Chicago (17e éd.)

Arntz,Helmut. Facts About Germany. 6th ed. [Bonn]: Press and Information Office, 1966.

Style de citation MLA (9e éd.)

Arntz,Helmut. Facts About Germany. 6th ed. Press and Information Office, 1966.