Dyfyniad APA

The Yankeegroup. (1981). The report on electronic mail. Cambridge: Harvard Square.

Dyfyniad Arddull Chicago

The Yankeegroup. The Report On Electronic Mail. Cambridge: Harvard Square, 1981.

Dyfyniad MLA

The Yankeegroup. The Report On Electronic Mail. Cambridge: Harvard Square, 1981.

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