Dyfyniad APA

United States Information Agency. Research Service. R. The Service.

Dyfyniad Arddull Chicago

United States Information Agency. Research Service. R. [Washington]: The Service.

Dyfyniad MLA

United States Information Agency. Research Service. R. The Service.

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