Dyfyniad APA

Krugman, P. (2009). The return of depression economics and the crisis of 2008. W.W. Norton.

Dyfyniad Arddull Chicago

Krugman, Paul. The Return of Depression Economics and the Crisis of 2008. W.W. Norton, 2009.

Dyfyniad MLA

Krugman, Paul. The Return of Depression Economics and the Crisis of 2008. W.W. Norton, 2009.

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