APA (7e ed.) Bronvermelding

Bulka Henz Dieter & Lucking, S. (1984). Facts about Germany: The Federal Republic of Germany (4th rev. ed.). Bertelsmann Lexikon Verlag.

Chicago (17e ed.) Bronvermelding

Bulka Henz Dieter en Susanne Lucking. Facts About Germany: The Federal Republic of Germany. 4th rev. ed. Gutersloh: Bertelsmann Lexikon Verlag, 1984.

MLA (9e ed.) Bronvermelding

Bulka Henz Dieter en Susanne Lucking. Facts About Germany: The Federal Republic of Germany. 4th rev. ed. Bertelsmann Lexikon Verlag, 1984.