Cita APA (7th ed.)

Verlag Dokumentation. (1973). World guide to trade associations. Verlag Dokumentation.

Cita Chicago (17th ed.)

Verlag Dokumentation. World Guide to Trade Associations. Pullach bei Munchen: Verlag Dokumentation, 1973.

Cita MLA (9th ed.)

Verlag Dokumentation. World Guide to Trade Associations. Verlag Dokumentation, 1973.