Dyfyniad APA

International Telecommunication Union. (1979). What is ITU? Geneva: International Telecommunication Union.

Dyfyniad Arddull Chicago

International Telecommunication Union. What Is ITU? Geneva: International Telecommunication Union, 1979.

Dyfyniad MLA

International Telecommunication Union. What Is ITU? Geneva: International Telecommunication Union, 1979.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.