Dyfyniad APA

Business Review (Federal Reserve Bank of Philadelphia). Federal Reserve Bank of Philadelphia.

Dyfyniad Arddull Chicago

Business Review (Federal Reserve Bank of Philadelphia). Federal Reserve Bank of Philadelphia.

Dyfyniad MLA

Business Review (Federal Reserve Bank of Philadelphia). Federal Reserve Bank of Philadelphia.

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