Dyfyniad APA

(1992). An outline of America economy. New York, USA: United States Information Agency.

Dyfyniad Arddull Chicago

An Outline of America Economy. New York, USA: United States Information Agency, 1992.

Dyfyniad MLA

An Outline of America Economy. New York, USA: United States Information Agency, 1992.

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