Dyfyniad APA

(1982). International telecommunications. Massachusetts: Lexington Books.

Dyfyniad Arddull Chicago

International Telecommunications. Massachusetts: Lexington Books, 1982.

Dyfyniad MLA

International Telecommunications. Massachusetts: Lexington Books, 1982.

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