APA (7th ed.) Citation

CCITT & International Telegraph and Telephone Consultative Committee. (1981). VIIth Plenary Assembly. International Telecommunication Union.

Chicago Style (17th ed.) Citation

CCITT and International Telegraph and Telephone Consultative Committee. VIIth Plenary Assembly. Ginebra: International Telecommunication Union, 1981.

MLA (9th ed.) Citation

CCITT and International Telegraph and Telephone Consultative Committee. VIIth Plenary Assembly. International Telecommunication Union, 1981.