APA (7th ed.) Citation

Postal, Telegraph and Telephone International. (1966). Protokoll vom Weltkongress. IPTT.

Chicago Style (17th ed.) Citation

Postal, Telegraph and Telephone International. Protokoll Vom Weltkongress. Genf: IPTT, 1966.

MLA (9th ed.) Citation

Postal, Telegraph and Telephone International. Protokoll Vom Weltkongress. IPTT, 1966.

Warning: These citations may not always be 100% accurate.