Dyfyniad APA

Gylfason, T. (1999). Principles of economic growth. Oxford university press.

Dyfyniad Arddull Chicago

Gylfason, Thorvaldur. Principles of Economic Growth. Oxford university press, 1999.

Dyfyniad MLA

Gylfason, Thorvaldur. Principles of Economic Growth. Oxford university press, 1999.

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