International Telecommunication Union. (1990). Follow-up study of the costs of providing and operating international telephone service between industrialised and developing countries: WATTC'88 resolution PL/3. International Telecommunication Union.
Chicago Style (17th ed.) CitationInternational Telecommunication Union. Follow-up Study of the Costs of Providing and Operating International Telephone Service Between Industrialised and Developing Countries: WATTC'88 Resolution PL/3. Geneva: International Telecommunication Union, 1990.
MLA (9th ed.) CitationInternational Telecommunication Union. Follow-up Study of the Costs of Providing and Operating International Telephone Service Between Industrialised and Developing Countries: WATTC'88 Resolution PL/3. International Telecommunication Union, 1990.